Atoms
Moles
Grams
Molar Mass
Emperical/Molecular Formula
100

How many grams in 6.02 x 10^23 atoms C?

12.01 g C

100
What is the mass (g) of 1.00 mol Li?
6.94 g Li
100
How many moles in 2.65 g Fe?
0.0474 mol Fe
100

What is the molar mass of Xenon?

131.3 g/mol

100

Find the empirical formula for the following compound:

15.8% carbon and 84.2% sulfur

CS2

200
How many moles in 3.011 x 10 ^23 atoms Mg?
0.5000 mol Mg
200
How many atoms in 6.755 mol Pb?
4.068 x 10^23 atoms Pb
200
How many grams in 6.50 moles Cu
413 g Cu
200
What is the molar mass of Iridium?
192.2 g/mol
200

Find the empirical formula for the following compound: 

40.0% carbon, 6.7% hydrogen, and 53.3% oxygen

CH2O

300
How is the mass in grams of the element converted to number of atoms?
Divided by molar mass, then multiply by Avogadro's Number
300
How is the mass in grams of the element converted to amount in moles?
Divide by the molar mass
300
How many moles are in 0.535 g Zn?
0.00818 mol Zn
300

What is the molar mass of C6H12O6

180.156 g/mol

300

Triethylenemelamine has an empirical formula of C3H4N2 and a molar mass of 204.23 g/mole. What is the correct molecular formula?

C9H12N6

400

How many grams in 10.5 x 1023 atoms Mg?

42.4 Mg

400

How many moles in 2.25 x 10^25 atoms Zn?

37.4 mol Zn

400
How many grams in 4.50 x 10^12 atoms Cl?
2.65 x 10^-10 g Cl
400

What is the molar mass of sodium hydroxide?

39.997 g/mol

400

What is the empirical formula for a compound containing 26.57% potassium, 35.36% chromium, and 38.07% oxygen?

K2Cr2O7

500
How many atoms in 0.250 mol S?
1.51 x 10^23 atoms S
500
How many moles in 150 g S?
4.7 mol S
500

How many grams in 8.42 x 1018 atoms Br?

0.00112 g Br

500

What is the molar mass of aluminum sulfate?

342.15 g/mol

500

A major textile dye manufacturer developed a new yellow dye. The dye has a percent composition of 75.95% C, 17.72% N, and 6.33% H by mass with a molar mass of about 240 g/mol. Determine the molecular formula of the dye.

C15H15N3

M
e
n
u