Unit 7 Parts 1-3

Question 1

What is Stoichiometry?

Answer 1

The study of the quantitative aspects of chemical reactions

Question 2

What is Stoichiometry used to determine?

Answer 2

The amount of reactants needed or products produced in a reaction

Question 3

What is a mole?

Answer 3

A scientific unit of measurement

Question 4

How big is a mole?

Answer 4

602 billion trillion or 6.02*10^23

Question 5

What is mole abbreviated?

Answer 5

mol

Question 6

What is another name for a mole?

Answer 6

Avogadro’s Number

Question 7

What is the name of the person who created the mole?

Answer 7

Amedeo Avogadro

Question 8

Although 1 mol of cookies and 1 mol of cars is the same number of cookies and cars, _____ is very different between the two.

Answer 8

Mass

Question 9

One mole of a substance is equal to the substance’s _____________________.

Answer 9

Atomic/Molecular mass

Question 10

What is Molar Mass measured in?

Answer 10

g/mol (grams per mol)

Question 11

If the mass of carbon is 12.01 grams on the Periodic Table, then what is the molar mass of 1 mol of carbon?

Answer 11

12.01 g/mol

Question 12

What is the molar mass of CH’4 if carbon weighs 12.01 grams and hydrogen weighs 1.01 grams?

Answer 12

16.05 g/mol

Question 13

When converting mol’s to grams, do you divide or multiply?

Ex. _____mol X(_______)
( )= ______ gX

Answer 13

Multiply

Question 14

When converting grams to mol’s, do you divide or multiply?

Ex. ______ gX(_______)
( )= _______mol X

Answer 14

Divide