Mole quiz review

A mole is equal to

• 602 particles

• 100g

• 6.02 x 10 ²³ particles

• 1 g

The correct unit for molar mass is

• gram /mol

• mol

• gram

• atom

The molar mass is best described as

• the number of atoms in 1 mole of a substance

• the mass of one mole of a substance

• how many moles are in one atom of a substance

How many oxygen atoms are in the compound Ba(NO₃)₂ ?

• 3

• 1

• 5

• 6

What is the molar mass for Chlorine: Cl₂ ?

• 35.5

• 71

• 17

• 34

What is the given in the problem below?

How many grams are in 5 moles of He?

• grams

• He

• 5 mol

• 5

What is the unknown (find) in the problem below?

How many atoms are in 12 g of LiCl?

• atoms

• 12

• LiCl

• 12g

Which is the correct way to set up the problem

How many grams are in 3 moles of C?  

[molar mass of C is 12 grams/mol}

•  $\frac{3mol\ \ }{ }\frac{\ \times\ \ 1\ \ mol\ }{\div12\ g}$  

•  $\frac{3mol}{ }\ \frac{\times\ 12\ g}{\div1\ mol}$  

•  $\frac{3mol}{ }\ \frac{\times1\ mol}{\div\ 6.02\ \times10^{23}g}$  

•  $\frac{3mol}{ }\ \frac{\times\ 6,02\ \times10^{23}\ grams}{+1\ mol}$  

What is the correct way to set up the problem

How many particles are in 5 mole of Li.

[molar mass of Li is 7 g/mol]

• $\frac{5\ mol}{ }\ \frac{\times\ 6.02\ x\ 10\ ^{23}\ particles}{\div\ 1\ mol}$

• $\frac{5\ mol\ }{ }\ \frac{\times\ 1mol}{\div\ 6.02\ \times10^{23}\ particles}$

• $\frac{5\ mol\ }{ }\ \frac{\ \times\ 7\ particles}{\div\ 1\ mol}$

what number is always used for particles?

• 1

• molar mass

• 6.02 x 10 ²³

• 100