When looking at a Mass Spectroscopy graph what must you do to the % abundance before you can use it in your formula? (Select all that apply)

move the decimal 2 spots to the left

move the decimal 2 spots to the right

What is the law of Definite Proportions?

Every sample of a compound WILL have the same % by mass of each element in the compound

Every sample of a compound will NOT have the same % by mass of each element in the compound

Almost every sample of a compound WILL have the same % by mass of the compound

What is the percent composition of $$MgCO_3$$ ?

Mg : 28.83% C : 14.24% O : 56.93%

Mg : 28.83% C : 14.23% O : 56.94%

Mg : 28.82% C : 14.24% O : 56.94%

What is the law of Multiple Proportions?

Two elements can combine in more than 1 mass ratio to make different compounds $$\left(Ex.\ :\ CO_2\ and\ CO\right)$$

Two elements can combine in once to make 1 compound $$\left(Ex.\ :\ only\ CO_2\ can\ be\ made\right)$$

What is a molecular formula?

The actual number of atoms/moles of each element in a compound

The smallest number of atoms/moles of each element in a compound

Composition For A Mixture : Solutions use ______.

Molarity $$\left(\frac{mol}{Liters}\right)$$

Mole Fractions $$\left(\frac{mol}{total\ mol}\right)$$

Composition For A Mixture : Gaseous Mixtures use ______.

Mole Fractions $$\left(\frac{mol}{total\ mol}\right)$$

Molarity $$\left(\frac{mol}{Liters}\right)$$

Composition For A Mixture : Solid Mixtures use ______.

Mole Fractions $$\left(\frac{mol}{total\ mol}\right)$$

Molarity $$\left(\frac{mol}{Liters}\right)$$

What does the electron configuration tell you about an electron?

The location of every electron in an atom

If the atom is more positive or negative

The state of matter the atom is in

Coulomb's Law states :

the force of attraction between opposite charges is directly proportional to the charge

the energy required to lose an electron from an atom

the force of attraction between opposite charges is NOT directly proportional to the charge

the energy required to gain an electron from an atom

Which statements are true? (Select all that apply) Ionization Energy (kj/mol) First : 578 Second : 1817 Third : 2745 Fourth : 11578

The Ionization energy shows the atom is in group 13 because of the big jump from the third to the fourth

The ionization energy's shows an increase from the third to the fourth

The Ionization energy is consistently low

The atom has no extra electrons

AP Chemistry Unit 1 - 4

Authored by CarrotQueen 1

Chemistry

9th - 12th Grade

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MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Elements / Compounds are NOT pure substances

True

False

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

1 mole = 6.02 x $10^{23}$

True

False

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is Avogadro's Number?

$2.06\ x\ 10^{23}$

$6.02$

$6.02\ x\ 10^{26}$

$6.02\ x\ 10^{23}$

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

The Molar mass of an element is the (a) mass of its isotopes.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Find The molar mass of $Li_2SO_4$ (To the 100th Decimal)

110.49g

109.94g

209.94g

94.11g

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the Molar Mass of NaCl? (To the 100th decimal)

58.65g

64.45g

58.44g

56.44g

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the Formula used to convert Grams to Moles?

$g\ x\ \frac{1\ mol}{g}\ x\ \frac{6.02\ x\ 10^{23}}{1\ mol}$

$g\ x\ \frac{6.02\ x\ 10^{23}}{1\ mol}$

$g\ x\ \frac{1\ mol}{g}\ x\ \frac{1\ mol}{6.02\ x\ 10^{23}}$

How many copper atoms are in 3.56g of copper? (To the 100th decimal)
$3.56g\ cu\ x\ \frac{1\ mol\ cu}{--}\ x\ \frac{--}{1\ mol\ cu}\ =\ ?$

$3.37\ x\ 10^{24}$

$3.37\ x\ 10^{22}$

3.37

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Mass Spectroscopy : To Find Average Atomic mass you must use this formula :
$\left[\%\ abundance\ of\ each\ isotope\ time\ mass\ of\ the\ isotope\right]$

True

False

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AP Chemistry Unit 1 - 4

Elements / Compounds are NOT pure substances

1 mole = 6.02 x 102310^{23}1023

What is Avogadro's Number?

The Molar mass of an element is the (a) mass of its isotopes.

Find The molar mass of Li2SO4Li_2SO_4Li2​SO4​ (To the 100th Decimal)

What is the Molar Mass of NaCl? (To the 100th decimal)

What is the Formula used to convert Grams to Moles?

How many copper atoms are in 3.56g of copper? (To the 100th decimal) 3.56g cu x 1 mol cu−− x −−1 mol cu = ?3.56g\ cu\ x\ \frac{1\ mol\ cu}{--}\ x\ \frac{--}{1\ mol\ cu}\ =\ ?3.56g cu x −−1 mol cu​ x 1 mol cu−−​ = ?

Mass Spectroscopy : To Find Average Atomic mass you must use this formula : [% abundance of each isotope time mass of the isotope]\left[\%\ abundance\ of\ each\ isotope\ time\ mass\ of\ the\ isotope\right][% abundance of each isotope time mass of the isotope]

What is the average atomic mass of this element?(Don't Forget to convert Percent's) (a)

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1 mole = 6.02 x $10^{23}$

Find The molar mass of $Li_2SO_4$ (To the 100th Decimal)

How many copper atoms are in 3.56g of copper? (To the 100th decimal)
$3.56g\ cu\ x\ \frac{1\ mol\ cu}{--}\ x\ \frac{--}{1\ mol\ cu}\ =\ ?$

Mass Spectroscopy : To Find Average Atomic mass you must use this formula :
$\left[\%\ abundance\ of\ each\ isotope\ time\ mass\ of\ the\ isotope\right]$

What is the average atomic mass of this element?
(Don't Forget to convert Percent's)

(a)