1/15 Mole Conversion Practice

What is the value of Avogadro’s number?

Tags

NGSS.HS-PS1-7

Which unit is commonly used to express molar mass?

• grams per liter

• grams per mole

• moles per liter

• kilograms per mole

Match the substances to the correct molar mass:

• CO₂

• 26.98 g/mol

• KOH

• 44.01 g/mol

• NaOH

• 38.00 g/mol

• Al

• 40.00 g/mol

• F₂

• 56.1 g/mol

What is the molar mass of MgCl₂?

(a)  

How many moles are in 32.4 grams of MgCl₂? Place the variables in the correct location to solve. (there are incorrect options)

a

b

c

59.488 g

95.211 g

70.90 g

1 mol

32.4 g

95.211 mol

Tags

NGSS.HS-PS1-7

How many moles are in 32.4 grams of MgCl₂? (3 sig figs)

(a)  

How many formula units are in 0.5 mol of MgCl₂?

• 4.000 x 10^23
• 3.011 x 10^23
• 2.500 x 10^23
• 1.204 x 10^24

Tags

NGSS.HS-PS1-7

What is the molar mass of Al(NO₃)₃

(a)  

How many moles are in 2.2x10²⁴ atoms of argon?

g

h

d

i

6.02x10²³ atoms

2.2x10²⁴ atoms

6.02x10²³ moles

6.02x10²³ compounds

1.3x10⁴⁸ moles

6.02x10²³ molecules

6.02x10²³ formula units

1 mole

3.7 moles

0.27 moles

How many molecules are present in 2 moles of H₂O?

• 1.204 x 10²⁴

• 2.000 x 10²⁴

• 6.022 x 10²³

• 3.011 x 10²³