Mole Math Jeopardy

Mole <--> Atom

100

This is the ratio for mole to atom conversion

What is Avagadro's number

6.02X10²³ atoms/mole

200

How many moles are in 7.1x10²⁴ atoms of potassium

What is 11.8 moles

(7.1x10²⁴)/(6.01x10²³) = 11.8 moles

300

How many particles are in 99.9 moles of O₂ gas?

What is 6.01x10²⁵ particles

400

How many atoms are in 0.34 grams of gold?

What is 1.04X10²¹ atoms

[(0.34)*(6.02x10²³)] / 196.97g

Mole <--> Mass

100

What is a molar mass?

The mass in grams that one mole of a substance is. 

200

How many grams are in 5 moles of water?

90 grams 

300

How many grams are in 7.5 moles of HCl?

273.75 grams

400

How many moles are in 700 grams of Cuprite (Cu₂H₂O)? 

4.8 moles 

Molar mass 145g/mol

700/145 = 4.8 moles

Mole <--> Volume

100

What is the volume occupied by one mole of any gas at standard temp and pressure?

22.4 L 

200

An certain amount of hydrogen gas occupies 48 L. How many moles of hydrogen atoms are present?

2.14 moles

48L / 22.4L = 2.14 moles 

300

What volume will 5 moles of vaporized HCL occupy at standard temperature and pressure?

112 L 

5 moles * 22.4L = 112 L

400

DAILY DOUBLE!!!

A sample of fluorine gas occupies 70 liters. Determine the number of moles of Fluorine AND the mass of that Fluorine in grams.

3.125 moles, 118.75 grams 

% Composition

100

What does % composition describe?

Mass contributions from each element in a molecule 

200

What percent of the mass of CO₂ comes from carbon?

27% 

molar mass of CO₂= 44 g/ mole 

Moles of CO₂ = moles of carbon 

molar mass of carbon = 12 g/ mole

12/ 44 = 27%

300

How many grams of oxygen can be produced from the decomposition of 100 g of H₂0? 

88.83 g 

[ 100 g of H₂0 = 5.5 moles of H₂0

5.5 moles of H₂0 = 5.5 moles of 0 

5.5 moles of 0 x 16 g/ 1 mole = 88.83] 

400

Dichloroethane, a compound that is often used for dry cleaning, contains carbon, hydrogen, and chlorine. It has a molar mass of 99 g/mol. Analysis of a sample shows that it contains 24.3% carbon and 4.1% hydrogen. What is its molecular formula?

C₂H₄Cl₂

Wildcard

100

What is a mole?

Unit of measurement

Avogadro's number of anything

200

What is the numerical value of Avogadro's number?

6.022 x 10²³ 

300

What day is national mole day?

October 23

400

DAILY DOUBLE!

What is the benefit of the mole? 

(Answers vary)

UNIT CONVERSION!
Makes our job as chemists easier to convert between values and units of ALL substances, elements, compounds, YOU NAME IT!