Mole Conversions

Multiple Choice

What is the definition of molar mass?

• number of grams per one mole of a substance

• whole number ratio that is a multiple of a chemical formula

• simplest, whole number ratio of a chemical formula

• 6.02 x 10^23 particles per one mole of a substance

Multiple Choice

Molar mass is in units of ________.

• grams

• grams/mole

• mole

• moles/gram

Multiple Choice

What is the definition for Avogadro's number?

• number of grams per one mole of a substance

• whole number ratio that is a multiple of a chemical formula

• simplest, whole number ratio of a chemical formula

• 6.02 x 10^23 particles per one mole of a substance

Multiple Choice

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.01 moles

• 1421.52 moles

• 32.3 moles

• 0.73 moles

Multiple Choice

What is the mass of 2.50 mole of oxygen gas O₂?

• 40 g

• 80 g

• 16 g

• 32 g

Multiple Choice

How many water molecules are in 5.2 moles of water?

• 6.02 x 10²³

• 5.2

• 3.1304 x 10²⁴

• 8.638 x 10^-24

Multiple Choice

Which would have more atoms?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal

Multiple Choice

What is the mole used for? 

• To measure the amount of grams in a substance
• To measure the amount of atoms or molecules in a substance
• To measure the amount of energy in a substance
• To measure the amount of bonding in a substance 

Multiple Choice

How many grams are in 11.9 moles of chromium?

• 50 g
• 619 g
• 0.23 g
• 4.4 g

Multiple Choice

1 mole of Ca and 1 mole of Na have the same number of atoms.

• True

• False

Multiple Choice

1 mole is equivalent to 6.02 x 10²³

• False

• True

Multiple Choice

What is a mole?

• The standard “unit” for measuring the amount of particles in a substance.

• The abbreviation for the term molecule.

• The relative mass of one atom of an particular element.

• A dark, hairy spot on your arm.

Multiple Choice

How many atoms are found in 1 mol of Xenon atoms?

• 6.02 x 10²³

• 3.01 x 10²³

• 1.204 x 10²⁴

• 6.02 x 10²⁴

Multiple Choice

What is the definition of molar mass?

• number of grams per one mole of a substance
• whole number ratio that is a multiple of a chemical formula
• simplest, whole number ratio of a chemical formula
• 6.02 x 10^23 particles per one mole of a substance

Multiple Choice

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram

Multiple Choice

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

Multiple Choice

What is the definition for Avogadro's number?

• number of grams per one mole of a substance
• whole number ratio that is a multiple of a chemical formula
• simplest, whole number ratio of a chemical formula
• 6.02 x 10^23 particles per one mole of a substance

Multiple Choice

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g
• 19.4 g
• 673 g
• 389 g

Multiple Choice

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.01 moles
• 1421.52 moles
• 32.3 moles
• 0.73 moles

Multiple Choice

What is the mass of 2.50 mol of oxygen gas O₂?

• 40 g
• 80 g
• 16 g
• 32 g

Multiple Choice

How many water molecules are in 5.2 moles of water?

• 6.02 x 10²³
• 5.2
• 3.1304 x 10²⁴
• 8.638 x 10^-24

Multiple Choice

Which would have more atoms?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal

Multiple Choice

What is the mole used for? 

• To measure the amount of grams in a substance
• To measure the amount of atoms or molecules in a substance
• To measure the amount of energy in a substance
• To measure the amount of bonding in a substance 

Multiple Choice

How many grams are in 11.9 moles of chromium?

• 50 g
• 619 g
• 0.23 g
• 4.4 g

Multiple Choice

1 mole of Ca and 1 mole of Na have the same number of atoms.

• True

• False

Multiple Choice

1 mole is equivalent to 6.02 x 10²³

• False

• True

Multiple Choice

What is a mole?

• The standard “unit” for measuring the amount of particles in a substance.

• The abbreviation for the term molecule.

• The relative mass of one atom of an particular element.

• A dark, hairy spot on your arm.

Multiple Choice

How many atoms are found in 1 mol of Xenon atoms?

• 6.02 x 10²³

• 3.01 x 10²³

• 1.204 x 10²⁴

• 6.02 x 10²⁴

Multiple Choice

What is molar mass?

• The mass of an atom

• The mass of a mole of atoms

• The mass of a cute little star-nosed mole

• When did we talk about this?

Multiple Choice

What is the mass of one mole of aluminum (Al)?

• 27 g

• 13 g

• 54 g

• 14 g

Multiple Choice

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³
• 146
• 4.15
• 1.51x10²⁴

Multiple Choice

What is the definition of molar mass?

• number of grams per one mole of a substance
• whole number ratio that is a multiple of a chemical formula
• simplest, whole number ratio of a chemical formula
• 6.02 x 10^23 particles per one mole of a substance

Multiple Choice

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram

Multiple Choice

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

Multiple Choice

What is the definition for Avogadro's number?

• number of grams per one mole of a substance
• whole number ratio that is a multiple of a chemical formula
• simplest, whole number ratio of a chemical formula
• 6.02 x 10^23 particles per one mole of a substance

Multiple Choice

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g
• 19.4 g
• 673 g
• 389 g

Multiple Choice

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.01 moles
• 1421.52 moles
• 32.3 moles
• 0.73 moles

Multiple Choice

What is the mass of 2.50 mol of oxygen gas O₂?

• 40 g
• 80 g
• 16 g
• 32 g

Multiple Choice

How many water molecules are in 5.2 moles of water?

• 6.02 x 10²³
• 5.2
• 3.1304 x 10²⁴
• 8.638 x 10^-24

Multiple Choice

Which would have more atoms?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal

Multiple Choice

What is the mole used for? 

• To measure the amount of grams in a substance
• To measure the amount of atoms or molecules in a substance
• To measure the amount of energy in a substance
• To measure the amount of bonding in a substance 

Multiple Choice

How many grams are in 11.9 moles of chromium?

• 50 g
• 619 g
• 0.23 g
• 4.4 g

Multiple Choice

1 mole of Ca and 1 mole of Na have the same number of atoms.

• True

• False

Multiple Choice

1 mole is equivalent to 6.02 x 10²³

• False

• True

Multiple Choice

What is a mole?

• The standard “unit” for measuring the amount of particles in a substance.

• The abbreviation for the term molecule.

• The relative mass of one atom of an particular element.

• A dark, hairy spot on your arm.

Multiple Choice

How many atoms are found in 1 mol of Xenon atoms?

• 6.02 x 10²³

• 3.01 x 10²³

• 1.204 x 10²⁴

• 6.02 x 10²⁴

Multiple Choice

What is molar mass?

• The mass of an atom
• The mass of a mole of atoms
• The mass of a cute little star-nosed mole
• When did we talk about this?

Multiple Choice

What is the mass of one mole of aluminum (Al)?

• 27 g

• 13 g

• 54 g

• 14 g

Multiple Choice

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³
• 146
• 4.15
• 1.51x10²⁴

Multiple Choice

What is the mass of one mole of aluminum (Al)?

• 27 g

• 13 g

• 54 g

• 14 g

Multiple Choice

How many O's are in Ba₃(PO₄)₂

• 4

• 8

• 6

• 3

Multiple Choice

Which would have more atoms?

• 1 mole of Li

• 1 mole of Au

• 1 mole of Si

• None, all are equal

Multiple Choice

The number of atoms of one mole of an element is equal to

• Avogadro’s number

• 1 gram

• Aufbau’s number

• 1 molecule

Drag and Drop

The number 6.02 x 1023 is called​

Placeholder

Drag these tiles and drop them in the correct blank above

___

president’s number

Bohr's Number

Avogadro's number

Lewis Dot number

Multiple Choice

The molar mass of an element is the mass of one ____ of the element.

• atom

• molecule

• mole

• gram

Multiple Choice

In the diagrams, circles of different sizes represent atoms of different elements. Which diagram can represent hydrogen chloride gas (HCl)?

Multiple Choice

2CO + O₂ --> 2CO₂

_{According to the equation above and the picture to the left, what will the final product box show?}

Multiple Choice

2CO + O₂ --> 2CO₂

_{According to the equation above and the picture to the left, what will the final product box show?}

The Mole and Molar Mass

By William Lovering

Fill in the Blank

If I had 34.7 AMU of lithium atoms, how many lithium atoms would I have?

Fill in the Blank

How many AMU would a methane molecule weigh?

Fill in the Blank

What if we made 1000 molecules of carbon monoxide?  How much would the mass be in AMU?

Fill in the Blank

How many H atoms would I need to go with 4 O atoms?

Fill in the Blank

What about 20 O atoms?

Fill in the Blank

What about 10,000 O atoms?

Fill in the Blank

What is the mass of 1 mol of oxygen atoms?

Fill in the Blank

What is the mass of 2 mol of hydrogen atoms?

Fill in the Blank

If you have 12 hydrogen atoms and 6 oxygen atoms, how many water molecules can you make?

Fill in the Blank

How much would 2 mol of hydrogen weigh in grams?

Fill in the Blank

How much would 1 mole of oxygen weigh in grams?

Fill in the Blank

Based on this, how much would 1 mol of water weigh in grams?

Multiple Choice

What is the mole used for? 

• To measure the amount of grams in a substance
• To measure the amount of atoms or molecules in a substance
• To measure the amount of energy in a substance
• To measure the amount of bonding in a substance 

Multiple Choice

What is the molar mass of H₂O?

• 6.02 x 10²³
• 16 grams
• 18 grams
• 15.99999 grams

Multiple Choice

What is the molar mass NaCl?

• 58 grams
• 22.95 grams
• 162 grams
• 6.02 x 10²³

Multiple Choice

How many atoms are in 1 mole of NaCl? 

• 6.02 x 10²³
• 58 
• 11
• 17

Multiple Choice

What is the molar mass when you have 4 moles of CO₂?

• 176 grams

• 54 grams

• 128 grams

• 280 grams

Multiple Choice

What is the difference between the atomic mass of an element and the molar mass of a compound?

• The atomic mass is the added sum of ALL of the elements

• The molar mass can be either the added sum of ALL the masses or the mass of a particular element

• The molar mass and the atomic mass are always the same

• The atomic mass of a compound is the average of H₂O

Multiple Choice

Why is the mole used to measure the atom?

• Atoms are extremely tiny particles, and their size varies from element to element

• Atoms are all the same size for every element

• Some atoms cannot be counted using the mole

• Tu eres loco, Senior Hagerman.

Multiple Select

The mole can be used to measure (SELECT ALL CORRECT ANSWERS)

• The amount of atoms

• The amount of molecules or compounds in a substance

• The amount of particles

• The amount of fission or fusion decay over time

Multiple Choice

How many atoms are in 1 mole of Iodine (I)?

• 6.022 x 10²³

• 4.022 x 10²³

• 6.022 x 10²⁵

• 4.022 x 10²⁵

Multiple Choice

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

Multiple Choice

Calculate the mass of 2 mol of methane. CH4

• 2

• 8

• 16

• 32

Multiple Choice

What is the mole used for? 

• To measure the amount of grams in a substance
• To measure the amount of atoms or molecules in a substance
• To measure the amount of energy in a substance
• To measure the amount of bonding in a substance 

Multiple Choice

What is Avogadro's Number? 

• 6.02 x 10²³
• - 6.02 10²³
• 6.02 x 10²²
• 6,020,000,000,000

Multiple Choice

What is the definition of molar mass?

• number of grams per one mole of a substance
• whole number ratio that is a multiple of a chemical formula
• simplest, whole number ratio of a chemical formula
• 6.02 x 10^23 particles per one mole of a substance

Multiple Choice

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram

Multiple Choice

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

Multiple Choice

What is the definition for Avogadro's number?

• number of grams per one mole of a substance
• whole number ratio that is a multiple of a chemical formula
• simplest, whole number ratio of a chemical formula
• 6.02 x 10^23 particles per one mole of a substance

Multiple Choice

Which would have more atoms?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal

Multiple Choice

Which represents the greatest mass of sulfur?

• 1 gram of sulfur
• 1 molecule of sulfur
• 0.5 mole of sulfur
• 6.02 x 10²³ atoms of sulfur

Multiple Choice

What is the molar mass of sodium (Na)?

• 11 g/mol

• 23 g/mol

• 1 g/mol

• 3 g/mol

Multiple Choice

What is the mass of one mole of aluminum (Al)?

• 27 g

• 13 g

• 54 g

• 14 g

Multiple Choice

What is the molar mass of table salt (NaCl)?

• 805 g/mol

• 35 g/mol

• 23 g/mol

• 58 g/mol

Multiple Choice

What is the molar mass of CO₂?

• 22

• 16

• 32

• 44

Multiple Choice

Which of the following is needed to determine the molar mass of a molecule?

• Types of elements in the molecule

• Quantity of elements in the molecule

• Mass of the elements in the molecule

• All are correct and needed.

Multiple Choice

What is the molar mass of Cl₂?

• 17 g/mol

• 35 g/mol

• 70 g/mol

• 89 g/mol

The Mole

​

Chickens and Elephants

• Which has more, a dozen chickens or a dozen elephants?

• Which weighs more, a dozen chickens or a dozen elephants?

• Which has more atoms, a dozen C or a dozen H? Which weighs more?

Comparisons

• Which has more animals - a mole of chickens or a mole of elephants?

• Which weighs more, a mole of C or a mole of H?

• How do we find the mass of a mole of any element or compound?

Multiple Choice

What do we call the mass of 1 mole?

• molality

• molar mass

• molecular weight

• molarity

Multiple Choice

If you have 1 mole of elephants, how many trunks and legs do you have?

• 1 mole of trunks and 1 mole of legs

• 1 mole of trunks and 2 moles of legs

• 1 mole of trunks and 4 moles of legs

• 4 moles of trunks and 4 mole of legs

Multiple Choice

If you have 1 mole of ethane molecules (C₂H₆), how many moles of C and H do you have?

• 1 mole of C and 1 mole of H

• 2 moles of C and 6 moles of H

• 2 moles of C and 2 moles of H

• 6 moles of C and 6 moles of H

Fill in the Blank

What does 1 mole of ethane weigh (in grams, to 4 sig figs)?

Molar Mass

mass of 1 mole

determined from the periodic table

keep sig figs as they are on the table (usually 2 decimal places)

Multiple Choice

What mass of sulfur contains the same number of atoms as 63.55 grams of copper?

• 1 g

• 63.55 g

• 32.06 g

• 6.02 x 102³ g

Multiple Choice

Which has more moles, 20.18 g of neon or 39.95 g of argon?

• 20.18 g of neon

• 39.95 g of argon

• they are both 1 mole

• no way to predict the answer to this

Multiple Choice

Which contains more atoms, 22.99 grams of sodium or 24.31 grams of magnesium?

• 22.99 grams of sodium

• 24.31 grams of magnesium

• they have the same number of atoms

• no way to predict this answer

Multiple Choice

How many atoms are present in a 13.5 gram sample of beryllium?

• 1.5 particles

• 9 particles

• 4.03 x10²³ particles

• 9.02 x10²³ particles

Multiple Choice

A sample of silver contains 5.71 x 10²² atoms. How many moles of silver are present?

• 3.43 x 10⁴⁶ moles

• 0.0529 moles

• 0.0948 moles

• 10.5 moles

Multiple Choice

How many atoms are present in a 0.0254 mole sample of gold?

• 0.25 atoms

• 1.528 x 10²² atoms

• 4.22 x 10^-25 atoms

• 5 atoms

Multiple Choice

Which of the following shows the correct setup to determine the number of moles of molecules in a 12.0 gram sample of Cl₂?

• 12/35.5 mole

• 12/71 mole

• 12 moles

• 12 x 35.5 moles

Multiple Choice

Vitamin C, also known as ascorbic acid, is water soluble and cannot be produced by the human body. Each day, a person's diet should include a source of Vitamin C, such as orange juice. Ascorbic acid has a molecular formula of C₆H₈O₆ and a molar mass of 176 grams per mole.

Determine the number of moles of vitamin C in an orange that contains 0.171 grams of vitamin C.

• 30.1 moles

• 1030 moles

• .000971 moles

• .0001 mole

Multiple Choice

What is the molar mass of calcium hydroxide, Ca(OH)₂?

• 74.1 g/mole

• 57.1 g/mole

• 58.1 g/mole

• 57.1 u

Multiple Choice

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

Multiple Choice

What is the molar mass of Zn(C₂H₃O₂)₂?

• 392.8g/mol

• 142.9g/mol

• 361g/mol

• 183.5 g/mol

Multiple Choice

Determine the mass of 2.40 moles of C₆H₁₂

• 201 g

• 115 g

• 230. g

• 353 g

Multiple Choice

What is the total mass, in grams, of a 0.75 mole sample of SO₂?

• 16 g

• 24 g

• 32 g

• 48 g

Multiple Choice

Calculate the mass of iron in a sample of iron ore containing 2.61x10²³ iron atoms.

• 0.433g
• 24.2g
• 44g
• 6.02g

Multiple Choice

How many molecules are present in a 135 g sample of Teflon, which has a formula of C₂F₄?

• 6.13 x 10²³ molecules

• 5.13 x 10²³ molecules

• 8.13 x 10 ²³ molecules

• 9.13 x 10²³ molecules

Multiple Choice

Which of the following would have more mass?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal

Multiple Choice

How many molecules are there in 31.8 moles of water? (H₂O has a molar mass of 18.0 g/mol)

• 572 g

• 1.91 x 10²⁵ molecules

• 5.28x 10-²⁵ molecules

• 1.77 g

Multiple Choice

Vitamin C, also known as ascorbic acid, is water soluble and cannot be produced by the human body. Each day, a person's diet should include a source of Vitamin C, such as orange juice. Ascorbic acid has a molecular formula of C₆H₈O₆ and a molar mass of 176 grams per mole.

Determine the number of moles of vitamin C in an orange that contains 0.171 grams of vitamin C.

• 30.1 moles

• 1030 moles

• .000971 moles

• .0001 mole

Multiple Choice

Calculate the number of moles of chlorine atoms in 55g of copper (II) chloride.

• 0.41 moles

• 0.82 moles

• 1.6 moles

• .20 moles

Multiple Choice

What is the mass of 0.75 moles of (NH₄)₃PO₄?

• 0.0044 g

• 91 g

• 110 g

• 74 g

Multiple Choice

Which has more molecules?

• 1 mole H₂O
• 1 mole Al(OH)₃
• 1 mole NaCl
• There are all the same

Multiple Choice

How many molecules are present in 135 g of Teflon C₂F₄

• 6.13 x 10²³ molecules

• 5.13 x 10²³ molecules

• 8.13 x 10 ²³ molecules

• 9.13 x 10²³ molecules

Multiple Choice

Which of the following would have the highest number of moles?

• 4g CO₂
• 15g H₂O
• 22g NaCl
• 100g AgCl

Multiple Choice

Calculate the % composition by mass of oxygen present in H₂SO₄.

• 16.3%
• 65.25%
• 32.6%
• 57.14%

Multiple Choice

What is the molar mass of calcium hydroxide, Ca(OH)₂?

• 74.1 g/mole

• 57.1 g/mole

• 58.1 g/mole

• 57.1 u

Converting Between Grams and Moles

​

Moles

• A mole is a unit that tells the number of molecules of a substance

• Ex: Pair or dozen

Multiple Choice

How many molecules are in a mole?

• $$6.02$$

• $$6.02\times10^{20}$$

• $$6.02x10^{23}$$

• $$6.02\times10^{42}$$

Calculating Molar Mass

• Take the atomic mass of each element

• Add them to find the molar mass of the substance

Multiple Choice

$$H_2O$$  What's the molar mass of water (H = 1g/mol) and (O=16g/mol)

• 14 g/mol

• 18 g/mol

• 20 g/mol

• 33 g/mol

Multiple Choice

$$CaCl_2$$  What's the molar mass? Ca=40g/mol, Cl=35g/mol

• 75 g/mol

• 110 g/mol

• 115 g/mol

• 150 g/mol

Multiple Choice

What's the molar mass of NaOH? (Na=23g/mol, O=16g/mol, H=1g/mol)

• 40 g/mol

• 39 g/mol

• 62 g/mol

• 56 g/mol

Converting Grams to Moles

Multiple Choice

$$O_2$$  How many moles of O are in 40g? (32g/mol)

• 0.8 mol

• 1 mol

• 1.25 mol

• 2 mol

Multiple Choice

Determine the number of moles of Mg₃P₂ that are in 583 g of the compound. (Molar mass = 135g/mol)

• 2.9 mol

• 6.1 mol

• 4.3 mol

• 1.7 mol

Multiple Choice

Determine the amount of moles of BaCl₂ that are in 436 g of the compound. (Molar Mass = 208 g/mol)

• 3.5 mol

• 2.1 mol

• 4.6 mol

• 2.7 mol

Multiple Choice

Determine the amount of moles in CuBr that are in 276.9 g of the compound. (Molar Mass = 143 g/mol)

• 3.2 mol

• 1.7 mol

• 2.1 mol

• 1.9 mol

Multiple Choice

Determine the number of moles of AlNO₃ that are in 264 g of the compound. (Molar Mass = 213 g/mol)

• 2.97 mol

• 3.45 mol

• 2.73 mol

• 1.24 mol

Converting Moles to Grams

Multiple Choice

What is the mass in grams of 5.90 mol C₈H_{18? (Molar Mass = 114 g/mol)}

• .0512 g

• 19.4 g

• 673 g

• 389 g

Multiple Choice

How many grams are in 0.523 mol of AlPO₄? (Molar Mass = 122 g/mol)

• 63.8 g

• 38.7 g

• 47.2 g

• 55.4 g

Multiple Choice

How many grams are equal to 0.11 mole of copper (I) chromate, Cu(CrO₄)? (Molar Mass = 180 g/mol)

• 26.74 g

• 19.8 g

• 39.50 g

• 13.69 g

Multiple Choice

Find the mass of 3.8 mol of H₂O. Round to the nearest tenth. (Molar Mass = 18 g/mol)

• 57.9 g

• 54.8 g

• 68.4 g

• 62.3 g

Multiple Choice

Find the mass of 3.6 mol of Au. (Molar Mass = 197 g/mol)

• 843.6 g

• 709.2 g

• 435.9 g

• 196.9 g

Converting Between Grams and Moles

​

Moles

• A mole is a unit that tells the number of molecules of a substance

• Ex: Pair or dozen

Multiple Choice

How many molecules are in a mole?

• $$6.02$$

• $$6.02\times10^{20}$$

• $$6.02x10^{23}$$

• $$6.02\times10^{42}$$

Calculating Molar Mass

• Take the atomic mass of each element

• Add them to find the molar mass of the substance

Multiple Choice

$$H_2O$$  What's the molar mass of water (H = 1g/mol) and (O=16g/mol)

• 14 g/mol

• 18 g/mol

• 20 g/mol

• 33 g/mol

Multiple Choice

$$CaCl_2$$  What's the molar mass? Ca=40g/mol, Cl=35g/mol

• 75 g/mol

• 110 g/mol

• 115 g/mol

• 150 g/mol

Multiple Choice

What's the molar mass of NaOH? (Na=23g/mol, O=16g/mol, H=1g/mol)

• 40 g/mol

• 39 g/mol

• 62 g/mol

• 56 g/mol

Converting Grams to Moles

Multiple Choice

$$O_2$$  How many moles of O are in 40g? (32g/mol)

• 0.8 mol

• 1 mol

• 1.25 mol

• 2 mol

Multiple Choice

Determine the number of moles of Mg₃P₂ that are in 583 g of the compound. (Molar mass = 135g/mol)

• 2.9 mol

• 6.1 mol

• 4.3 mol

• 1.7 mol

Multiple Choice

Determine the amount of moles of BaCl₂ that are in 436 g of the compound. (Molar Mass = 208 g/mol)

• 3.5 mol

• 2.1 mol

• 4.6 mol

• 2.7 mol

Multiple Choice

Determine the amount of moles in CuBr that are in 276.9 g of the compound. (Molar Mass = 143 g/mol)

• 3.2 mol

• 1.7 mol

• 2.1 mol

• 1.9 mol

Multiple Choice

Determine the number of moles of AlNO₃ that are in 264 g of the compound. (Molar Mass = 213 g/mol)

• 2.97 mol

• 3.45 mol

• 2.73 mol

• 1.24 mol

Converting Moles to Grams

Multiple Choice

What is the mass in grams of 5.90 mol C₈H_{18? (Molar Mass = 114 g/mol)}

• .0512 g

• 19.4 g

• 673 g

• 389 g

Multiple Choice

How many grams are in 0.523 mol of AlPO₄? (Molar Mass = 122 g/mol)

• 63.8 g

• 38.7 g

• 47.2 g

• 55.4 g

Multiple Choice

How many grams are equal to 0.11 mole of copper (I) chromate, Cu(CrO₄)? (Molar Mass = 180 g/mol)

• 26.74 g

• 19.8 g

• 39.50 g

• 13.69 g

Multiple Choice

Find the mass of 3.8 mol of H₂O. Round to the nearest tenth. (Molar Mass = 18 g/mol)

• 57.9 g

• 54.8 g

• 68.4 g

• 62.3 g

Multiple Choice

Find the mass of 3.6 mol of Au. (Molar Mass = 197 g/mol)

• 843.6 g

• 709.2 g

• 435.9 g

• 196.9 g

Multiple Choice

What is the mass of one mole of silver?

• 32.06 g

• 107.87 g

• 14.01 g

• 22.99 g

Multiple Choice

Which conversion factor should be used to solve the following, "How many moles in 28 grams of CO₂?"

• 1 mol = 22.4 L 
• 1 mol = 44.01 g
• 1 mol = 6.02x10²³ atoms
• more than one

Multiple Choice

What is the molar mass of Hydrogen Peroxide (H₂O₂)?

• 48 g/mole
• 34.02 g/mole
• 36.5 g/mole
• 35.5 g/mole

Multiple Choice

The number 6.02 x 10²³, which is the number of particles found in a mole. 

• molar mass
• mole
• Avogadro's number
• hydrate

Multiple Choice

How many moles are in 16.94g of water?

• 16.94 mol H₂O
• 0.9401 mol H₂O
• 305.3 mol H₂O
• 1.063 mol H₂O

Multiple Choice

How many molecules of sugar (C₆H₁₂O₆) are in a mole?

• 24 molecules
• 180 molecules
• 180 g
• 6.02 x 10²³ molecules

Multiple Choice

Which of the following dimensional analysis setups will correctly convert 27.76g of Li to atoms of Li?

• A
• B
• C
• D

Multiple Choice

How many moles are in 19.82 g Mg? 

• 1.226mol Mg
• 481.7mol Mg
• 1.000mol Mg
•  0.8156 mol Mg

Multiple Choice

Which of the following dimensional analysis setups will correctly convert 4.00x10²³atoms of cobalt to moles of cobalt? How many moles of colbalt are there?

• setup B : 0.6644mol Co
• setup A: 2.41x10⁴⁷mol Co
• setup A : 0.664mol Co
• setup B: 2.41x10⁴⁷mol Co

Multiple Choice

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.050 moles
• 1.81 x 10⁴⁶ moles
• 5.00 x 10²¹ moles
• 5.00 moles

Multiple Choice

Which has more atoms, 12.0 mol of C or 12.0 mol of Ca?

• 12.0 mol C
• 12.0 mol Ca
• They are equal

Multiple Choice

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

Multiple Choice

What is the molar mass of one molecule of Nitrogen N₂?

• 14.01 amu
• 14.01 g
• 28.02 g
• 28.02 amu

Multiple Choice

What is the mass of one mole of aluminum?

• 26.982 g
• 13 g
• 53.985 g
• 14 g

Multiple Choice

How many moles are in 15 grams of Lithium?

• 2.14

• 0.47

• 105

• 7

Multiple Choice

How many grams are in 2.4 moles of Sulfur?

• 76.8

• 0.075

• 13.3

• 32

Multiple Choice

4.0 moles of H₂O would have what mass?

• 72 g
• 23 g
• 68 g
• 4.5 g

Multiple Choice

The mass of one mole of an element is equal to

• its atomic number from the periodic table, but in amus.

• its atomic mass from the periodic table, but in amus.

• its atomic mass from the periodic table, but in grams.

• its atomic number from the periodic table, but in grams.

Multiple Choice

How many grams are in 1.2 moles of neon?

• 0.059 grams

• 7.2 x 10²³ grams

• 2.0 x 10^-24 grams

• 24 grams

Multiple Choice

Which conversion factor should be used to solve the following, "How many moles are in 28 grams of CO₂?"

• 1 mol = 22.4 L 
• 1 mol = 44.01 g
• 1 mol = 6.02x10²³ atoms
• more than one

Multiple Choice

What is the volume occupied by 1 mole of any gas?

• 44.8 L
• 22.4 L
• 16.8 L 
• 20.4 L 

Multiple Choice

How many moles are in a 18 L tank of nitrogen gas?

• 0.9 moles

• 1 mole

• 0.8 moles

• 0.75 moles

Multiple Choice

The number 6.02 x 10²³ is called...

• Obama's number
• Bohr's number
• Trump's number
• Avogadro's number

Multiple Choice

How do we get mass from moles?

• multiply by avogadro's number
• multiply by molar mass
• divide by avogadro's number
• divide by molar mass

Multiple Choice

What should go in the question mark spot?

$$57.2\ grams\ NiS\ \times\ \frac{1\ mol}{?}=0.63\ mol$$  

• $$6.02x10^{23}\ mc$$  

• 1 mole

• 90.75 grams

• 57.2 grams

Multiple Choice

If you start with $$8.47x10^{24}\ molecules$$   , how many conversion fractions does it take to convert to grams?

• 1

• 2

Multiple Choice

How many moles are in $$3.92x10^{23}$$  molecules of $$CaF_2$$  ?

Which part of the setup is incorrect?

$$3.92x10^{23}\ molecules\ \times\ \frac{1\ mole}{78.08\ g}$$  

• $$3.92x10^{23}\ molecules$$  

• 1 mole

• 78.08 g

Multiple Choice

How many grams are in $$9.28x10^{23}\ molecules$$  of NaCl?

Choose the correct setup.

• $$9.28x10^{23}\ molecules\ \times\frac{6.02x10^{23}\ grams}{1\ mole}$$  

• $$9.28x10^{23}\ molecules\ \times\frac{6.02x10^{23}\ mc}{1\ mole}\times\frac{58.44\ g}{1\ mole}$$  

• $$9.28x10^{23}\ molecules\ \times\frac{1\ mole}{6.02x10^{23}\ mc}\times\frac{58.44\ g}{1\ mole}$$  

• $$9.28x10^{23}\ molecules\ \times\frac{58.44\ g}{1\ mole}$$  

Fill in the Blank

How many grams are in 2.9 moles of $$SiCl_4$$  ? Fill in the missing information.

$$2.9\ mol\ \times\ \frac{?\ grams}{1\ mole}=492.68\ g\ SiCl_4$$  

Fill in the Blank

How many molecules are in 4.93 moles of $$Ga_2S_3$$  ? Fill in the missing information.

$$4.93\ mol\ \times\ \frac{?\ molecules}{1\ mole}$$  

Multiple Choice

If you're starting with $$7.31x10^{24}\ molecules$$  of SrS and you want to convert to moles, what would go on the bottom of the conversion fraction?

$$7.31x10^{24}\ molecules\ \times\frac{ }{??????????????}$$  

• $$6.02x10^{23}\ molecules$$  

• 1 mole

• 119.68 g

Multiple Choice

If you have 82.21 grams of NO₂, how many molecules do you have?

Pick the correct setup.

• $$82.21\ g\ \times\frac{1\ mol}{46.01\ g}\times\frac{1\ mol}{6.02x10^{23}\ molecules}$$  

• $$82.21\ g\ \times\frac{1\ mol}{46.01\ g}\times\frac{6.02x10^{23}\ molecules}{1\ mol}$$  

• $$82.21\ g\ \times\frac{6.02x10^{23}\ molecules}{1\ mol}$$  

• $$82.21\ g\ \times\frac{1\ mol}{46.01\ g}$$  

Multiple Choice

How many moles are in 2.67x10²⁴ molecules of H₂O?

What is the missing piece?

$$2.67x10^{24}\ molecules\times\frac{???????????}{6.02x10^{23}\ mc}$$  

• 6.02x10²³ mc

• 1 mole

• 18.016 grams

• 2.67x10²⁴ mc

Multiple Choice

If you're starting with 82.21 grams of PH₃ and you want to convert to moles, what would go on the bottom of the conversion fraction?

$$82.21\ grams\ \times\frac{ }{??????????????????}$$   

• 1 mol

• 33.994 grams

• 6.02x10²³ mc

• 82.21 grams