Vocabulary
Molar Mass
Moles
Avagadro's Number
2 Step conversions
100

The amount of entities in a mol is called _______ 's constant or _______'s number.

Avagadro    (Avacado Guy is not an acceptable answer)

100

Calculate the molar mass of NaI.

149.89 g/mol

100

How many moles are in 80.465 g of Na?

3.5 moles

100

How many atoms are in 3 mols of Na?

1.8066 x 1024 atoms Na

100

What is the mass of 3.792x1027 molecules of H2SO4?

607400 g

200

The _______  _______ is the mass of 1 mol of a specific element.

Molar Mass

200

Calculate the Molar Mass of CH4

16.043 g/mol

200

How many mols are in 50 grams of H2O?

~ 2.775 moles

200

There are 1.601x1024 Calcium Chloride atoms, how many mol are there?

2.66 mol CaCl2

200

How many molecules are in 5.02g of NH4OH?

8.62x1022

300

Units cancel out of stoichiometry equations when the same unit is each on the _______________ and __________________________

numerator and denominator

300
What is the Molar Mass of Fe2(CO3)3

291.717 g/mol

300

If you have 7.5 mol of NaCl, how much will this weigh in grams?

438.3 g NaCl

300

How many molecules are in 45 mol of CaCO3

2.710x1025 molecules CaCO3

300

How many atoms are in 7.11g of CH4?

2.67x1023

400

A standard unit in chemistry is used for measuring large amounts of small entities such as atoms or molecules.

Moles (Mol is acceptable)

400

Calculate the Molar Mass of CaCO3

100.086 g/mol

400

How many mols are in 63 grams of Ca(CO)2

~ 0.629 mol

400

How many molecules are in 18.015 g of H2O

6.022x1024 molecules H2O

400

How many grams are in 19.17x1023 atoms of PH3?

108.23 g

500

______ in chemical equations tell us the number of moles of a compound that are required for this reaction to take place.

Coefficients

500

What is the molar mass of C12H22O11

342.297 g/mol

500

If you have 11.5 mol C4H11, how many grams will this weigh?

680.018 g C4H11

500

How many molecules are in 48 grams of CH4

1.8021x1024 molecules

500

How many atoms are in 63.07g of water?

2.108x1024

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