Mole & Molar Mass D1 2/3

​Round Robin

Answer the following questions about yourself. If finished early ask a follow-up question. When finished, everyone sits
1) Name?
2) Share what you did this weekend.
3) What are your goals for the week?

Open Ended

How was your weekend? Share what you did and what your goals are for this week--either personal, school-related or BOTH. Complete answers will receive 5 star points.

Multiple Choice

What does a dozen measure?

• pieces or particles of items

• volume of items

• color of a items

• density of items

Multiple Choice

These two dishes shown each contain 1 dozen of solid material, how can they have different masses (one has a mass of 11.98 grams and the other has a mass of 15.38grams)?

• There are more M&M's than Skittles

• The two solids are made of different ingredients with different masses

Multiple Choice

This dish contains one dozen of Skittles solid substance, how many dozen would we have if we tripled this amount?

• one half of a dozen Skittles

• one quarter of a dozen Skittles

• two dozen Skittles

• three dozen Skittles

Multiple Choice

The picture shown is exactly one mole of sulfur, S, what is one mole a measurement of?

• the mass of sulfur

• the volume of sulfur

• the density of sulfur

• the number of particles of sulfur

Math Response

The picture shown is exactly one mole of sulfur, S,

Use Periodic Table

What is the mass of one mole a measurement of?

Type answer here

Correct Answer: 32.066

Deg^°

Rad

Multiple Select

Select ALL that applies

What are the characteristics of a MOLE?

• A mole is a counting unit

• Equal to 6.02 x 10²³ particles.

• The concept of mole is similar to the concept of dozen

• none of the above

Multiple Choice

When comparing a mole of oxygen and a mole of sulfur, how many atoms does each have?

• oxygen has 16 grams of atoms

• sulfur has 32.06 grams of atoms

• both contains 6.02 x 10²³ atoms

• can not be determined

Multiple Choice

Which would have more atoms?

• 1 mole of Li

• 1 mole of Au

• 1 mole of Si

• All are equal

Multiple Choice

Which has more molecules?

• 1 mole H₂O

• 1 mole Al(OH)₃

• 1 mole NaCl

• There are all the same!

Open Ended

Explain why it is easier to measure elements by MASS rather than counting 1 mole (6.02x10^23 atoms) at a time.

Molar Mass

1 mole of atoms of any element will have a mass equal to its relative Atomic Mass on the periodic table!

• Its shown in grams​

​Once Again

​1 Mol = 23 grams

2 Mol =

3 Mol =

Multiple Choice

How many grams are in 1 mole of Mg?

• 12 grams

• 24 grams

• 36 grams

• 6.022 x 10²³ grams

Multiple Choice

How many grams are in 3 mol of carbon?

• 6 grams

• 12 grams

• 18 grams

• 36 grams

Multiple Choice

How many grams are in 5 mol of lithium

• 3 grams

• 15 grams

• 35 grams

• 7 grams

Multiple Choice

How many grams are in 10 mol of fluorine?

• 19 grams

• 190 grams

• 90 grams

• 9 grams

Formula Weight

​Its the sum of all the atomic weights in a formula.

to find the formula weight of a compound:

1. find the number of atoms of each element present in the compound

2. multiply the number of atoms by their respective weight

3. add the atomic weights of all the elements present.

Example: H₂O

1. H₂O contains 2 atoms of Hydrogen and 1 atom of Oxygen​

   ​

2. Hydrogen: 2 x 1.0080 = 2.016

Oxygen: 1 x 16 = 16

​

3. 2.016 + 16 = 18.016

Multiple Choice

Find the molar mass of carbon monoxide

CO

• 16 amu

• 12.011 amu

• 28.011 amu

• 29.019 amu

Open Ended

Explain in your own words why it would be useful to count amount of elements by MOLAR MASS instead of one atom at a time.

Multiple Choice

Calculate the Molar Mass for CaCl₂

• 75.53 mol/g

• 110.98 g/mol

• 35.45 g/mol

• 40.08 g/mol

1) Group
2) Individual

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Quizlet Live Review

Multiple Select

Do you understand what a mole is and how to calculate molar mass?

• ??????