Percent Composition
Conversions
Empirical Formula
Different Units
Molar Mass
100

The percent by mass of oxygen in MgO

What is 40%?

100

The amount of molecules in 9.44 moles of AlCl3.

What is 5.68x1024 molec AlCl3?

100

The empirical formula of a compound that is 63.52% iron and 36.48% Sulfur


What is FeS?

100

The units for molar mass

grams/mole

100

The molar mass for the compound Fe2(SO4)3.


What is 399.90 g/mol?

200

The percent composition by mass of sulfur in the compound MgSO4.

What is 27%?

200

Which conversion factor should be used for the following question " How many molecules are there in 4.00 moles of glucose, C6H12O6?

What is 1 mol = 6.02x 1023 particles?

200

A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?

What is Mg3N2?

200

Molarity is...

moles of solute/liters of solution.



200

The molar mass of Hydrogen Peroxide (H2O2).

What is 34.02 g/mole?

300

The percent of Hydrogen in Glucose, C6H12O6.

What is 6.67%?

300

The molarity of 4 grams of KNO3 in 3.8 L of solution.


What is 0.01 M?

300

A compound is 50% sulfur and 50% oxygen by weight. Determine the empirical formula and the molecular formula if the molecular mass is 128 grams.

What is SO2?

300

The number 6.02 x 1023, which is the number of particles found in a mole.

What is Avogadro's number?

300

The molar mass of AuCl3.

What is 303.3 g/mol?

400

The percent by mass of fluorine in CaF2

What is 49%?

400

How many moles are in 16.94g of water?

What is 0.9401 mol H2O?

400

A 15g sample of a compound is found to contain 58.87% sodium and 41.13% sulfur. Calculate the empirical formula of this compound.

What is Na2S?

400

Molar mass is...

What is the average atomic mass of an element?

400

The molar mass of NaCl.

What is 58.44 g/mol?

500

The percent of oxygen in one mole of Glucose, C6H12O6.

What is 53.28%?

500

The amount of moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution.

What is 1.07 mol?

500

The empirical formula for Hydrogen Peroxide (H2O2).

What is HO?

500

1 mol equals...

What is Avogadro's number?

What is molar mass?

What is 22.4 L?

500

The molar mass of MgBr2.

What is 184.11 g/mol?

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