Stoichiometry Jeopardy

The Mole/Molar Mass

100

Quantity of a mole

What is 6.02 x 10^23?

200

molar mass of bismuth (Bi)

What is 209.98 g/mol?

300

Molar mass of CaO

What is 56.08 g/mol?

400

Molar mass of  BaCl₂?

What is 208.23 g/mol?

500

Molar mass of AgNO₃ 

What is 169.87 g/mol?

Mole Conversions

100

Explain how to convert from moles to grams and grams to moles of the same substance

What is multiply or divide by the molar mass of the substance?

200

number of moles in 45 grams of HF

What is 2.25 moles?

300

Number of moles in 456 g of Ra(OH)₂

What is 1.75 moles?

400

Number of grams in 1.47 moles NaHCO₃

What is 123.44 grams?

500

Number of grams in .568 moles of Pb(CH₃COO)₄

What is 25.73 grams?

More Mole Conversions

100

How many molecules are present in 8.48 moles of H₂O?

What 5.10 x 10^24 molecules of water?

200

How many moles are there in 3.47 x 10^ 23 gold atoms?

What is .58 moles of gold atoms?

300

What is the mass of 5.0 x 10^14 molecules of water (H₂O)?

What is 1.50 x 10^-8 grams of H₂O?

400

How many molecules are contained in 168.2 grams of CO2

What is 2.30 x 10^24 molecules?

500

How many molecules of Li₂O are there in 100 grams of Li₂O?

What is 2.01 x 10^24 molecules?

Empirical and Molecular Formulas

100

Definition of molecular formula

What is the actual ratio of atoms present in a compound?

200

Definition of empirical formula

What is the simplest whole-number ratio of atoms present in a compound?

300

The empirical formula for glucose C₆H₁₂O₆ would be?

What is CH₂O?

400

What is the empirical formula for a compound that is 74.03% C, 8.7%H and 17.27%N

What is C₅H₇N?

500

Using the empirical formula C₅H₇N, determine the molecular formula if the compound has a molecular mass of 324 g.

What is C₂₀H₂₈N₄?

Percent Composition

100

This value is the percent composition of hydrogen in water.

What is 11.1% H?

200

This is the percent composition of hydrogen in NH₄.

What is 22.2% H?

300

This is the percent composition of nitrogen in (NH₄)₂S?

What is 41.2% N?

400

What is the percent composition of oxygen in Cu₃(PO₄)₂?

What is 33.5% O?

500

This is the percent composition of all elements in KMnO₄?

What is 24.74% K?

What is 34.76% Mn?

What is 40.5% O?