Moles

about moles

100

What is Avogadro's number

6.02x10²³

200

how do you get from grams to moles?

grams to moles, you divide

300

how to get from moles to grams?

_{What is multiply moles by molar mass?}

400

How to get from grams to moles?

Divide grams by molar mass

500

How to find the molar mass of a molecule or compound?

1) Count the number of atoms of each element. 2) Multiply each element's molar mass by the number of that element. 3) Add the molar mass of the molecules or compound.

Percent Composition

100

The first step in percent composition is to find the-

molar mass

200

What am I going to divide each individual total by in the problem of NaOH?

39.997g

300

What is the percent composition of Hydrogen in the compound H₂0?

What is 11%

400

what is the Calcium in the compound Ca(NO₃)₂? 

What is the 24%

500

The formula for percent composition?

Percent Composition by mass: 

The total molar mass of just the element/ molar mass of the WHOLE compound. times 100%

Molar Mass

100

What is the molar mass of H2O?

18.015

200

What is the molar mass of NaCl?

58.44

300

what is the molar mass of Al₂(SO₄)₃

342.15g/mol

400

What is the molar mass of MgO?

40.304g

500

what is the molar mass of Mg₃(PO₃)₂?

230.859

Grams to moles

100

How many moles are in 713grams of Al2(SO4)3

2.08MOL Al2(SO4)3

200

how many moles are in 15 grams of lithium? ( molar mass of lithium is 6.94g/mol)

2.2mol of Li

300

How many moles are in 22g of argon?

0.550

400

there is 26.98g of aluminum in a can. how many moles is this?

1 mole

500

How many moles are in 24g of Carbon?

2 moles

Moles to Grams

100

What is the mass in grams of 3.81 moles of Fe2O3?

608g

200

How many grams are in 2.4moles of sulfur?

77g Sulfur

300

How many grams are in 1mol of silver?

107.87g

400

how many grams are in 3.5moles of Potassium Flouride?

203.35g

500

How many grams are in 4 moles of oxygen?

64g