Free Printable Grams, Moles

1.

How many molecules of AlCl₃ are in 9.44 moles of AlCl₃?

a)

5.68 molecules

b)

5.68x10²⁴molecules

c)

0.705 molecules

d)

1.25x10²³molecules

2.

(0901) Avogadro’s number is:

a)

6.02 x 10²²

b)

6

c)

6.02 x 10²³

d)

3.01 x 10²³

3.

(0901) Which conversion would you use if you need to convert from MOLES to particles?

a)

$\frac{1\ mole}{6.02\ x\ 10^{23}particles}$

b)

$\frac{6.02\ x\ 10^{23}moles}{1\ particle}$

c)

$\frac{6.02\ x\ 10^{23}particles}{1\ mole}$

d)

$\frac{1\ particle}{6.02\ x\ 10^{23}\ moles}$

4.

(0901) How many water molecules are in 5.2 moles of water?

a)

6.0 x 10²³ molecules

b)

5.2 molecules

c)

3.1 x 10²⁴ molecules

d)

8.6 x 10^-24 molecules

5.

(0901) How many moles of methane (CH₄) are in 1.24 x 10²⁶ molecules of methane?

a)

6.02 x 10²³ moles

b)

7.46 x 10⁴⁸ moles

c)

978 moles

d)

206 moles

6.

(0902) The mass of one mole of a substance is called...

a)

molecular mass

b)

mole constant

c)

molar mass

d)

atomic weight

7.

(0902) What is the molar mass of Ca(NO₃)₂?

a)

148.096 g

b)

164.086 g

c)

102.055 g

d)

70.084 g

8.

(0902) What is the molar mass of carbon dioxide?

a)

12.40 g/mol

b)

16.55 g/mol

c)

32.21 g/mol

d)

44.01 g/mol

9.

(0902) Which compound has the smallest molar mass?

a)

CO

b)

CO₂

c)

H₂O

d)

H₂O₂

10.

(0903) How many moles are in 47 g of KCl (molar mass = 74.551 g/mol)

a)

0.63 mole

b)

1.6 moles

c)

3500 moles

d)

120 moles

11.

(0903) How many moles are in 47 g of KCl (molar mass = 74.551 g/mol)

a)

0.63 mole

b)

1.6 moles

c)

3500 moles

d)

120 moles

12.

(0903) Determine how many grams are in 0.36 moles of CCl₄ (molar mass = 153.82 g/mol)

a)

150 g

b)

55 g

c)

0.0023 g

d)

2.2 g

13.

(0903) How many moles are in 16.94 g of water? (hint: find the molar mass of water)

a)

16.94 moles

b)

0.9403 mole

c)

305.2 moles

d)

1.063 moles

14.

(0903) Suzie wants to know the mass of 1.55 moles of nitrogen trichloride. How do you set up the problem?

a)

$1.55\ mole\ NCl_3\ \times\ \frac{1\ mole}{molar\ mass\ of\ NCl_3\ \left(g\right)}=$

b)

$1.55\ mole\ NCl_3\ \times\ \frac{molar\ mass\ of\ NCl_3\ \left(g\right)}{1\ mole}=$

c)

$\ 1\ mole\ \times\ \frac{1.55\ mole\ NCl_3}{molar\ mass\ of\ NCl_3\left(g\right)}=$

d)

$\ molar\ mass\ of\ NCl_3\left(g\right)\ \times\ \frac{1\ mole}{1.55\ mole\ NCl_3}=$

15.

(0904) How many atoms would be contained in 454 grams of iron?

a)

6.02 x 10²³ atoms

b)

8.14 atoms

c)

4.89 x 10²⁴ atoms

d)

55.9 x 10²³ atoms

16.

(0904) Which of these is the correct line of equalities for carbon dioxide?

a)

1 mole of CO₂ = 6.02 x 10²³grams of CO₂ = 44.01 particles of CO₂

b)

6.02 x 10²³mole of CO₂ = 44.01 particles of CO₂ = 1 gram of CO₂

c)

6.02 x 10²³ mole of CO₂ = 1 particle of CO₂ = 44.01 grams of CO₂

d)

1 mole of CO₂ = 44.01 grams of CO₂ = 6.02 x 10²³particles of CO₂

Grams, Moles

Total questions: 16

Worksheet time: 56mins

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