Free Printable U03 Mole Conversions

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U03 Mole Conversions

Total questions: 20

Worksheet time: 2hrs 30mins

Name

Class

Date

You chew a 2.50 g piece of gum for 5 minutes. After chewing, 0.25 g of material remains. How much of the gum was indigestible rubber like polymer?

0.00 g

2.50 g

0.25 g

2.25 g

Which conversion factor should be used to solve the following, "How many moles in 28 grams of CO₂?"

1 mol =12.0 g

1 mol = 44.01 g

1 mol = 6.02x10²³ atoms

44.01 g = 6.02x10²³ atoms

Which conversion factor should be used for the following question " How many molecules are there in 4.00 moles of glucose, C₆H₁₂O₆?

1 mole = 180. g

180. g = 6.02x 10²³ particles

1 mol = 6.02x 10²³ particles

1 molecule = 24 atoms

Which of the following dimensional analysis setups will correctly convert 27.76g of Li to atoms of Li?

Which conversion factor(s) should be used to solve the following, "Find the mass in grams of 2.00 x 10²³ molecules of F₂."

1 mol = 22.4 L

1 mol = 38.00 g

1 mol = 6.02x10²³ atoms

1 mol = 19.00 g

1 mol = 6.02 g

What is the molar mass of Hydrogen Peroxide (H₂O₂)?

48 g/mole

34.02 g/mole

36.5 g/mole

35.5 g/mole

What is the mass of 0.89 mol of H₂O? 1 mol H₂O = 18.0 g

20.2 grams

0.049 grams

16.0 grams

5.4x10²³grams

How many moles are in 16.94g of water? 1 mol H₂O = 18.0 g

16.94 mol H₂O

0.9401 mol H₂O

305.3 mol H₂O

1.063 mol H₂O

How many atoms of carbon are in 6.00g of carbon?

1.20x10²⁴atoms C

6.02x10²³atoms C

3.01x10²³atoms C

1.50x10²³atoms C

10.

How many total atoms are in 1.19x10²³ molecules of H₂O?

0.198 atoms

3.57x10²³ atoms

1.20x10²³ atoms

18.0 atoms

11.

Find the percent composition of hydrogen in H₂O

11.2%

12.6%

88.9%

33.4 %

12.

Write in scientific notation:
0.00071363

7.1363 x 10^-3

7.1363 x 10^-4

7.1363 x 10⁴

7.1363 x 10³

13.

Change from standard form to scientific notation: 450,000

4.5 x 10⁵

45 x 10⁵

4.5 x 10⁴

4.5 x 10⁶

14.

Write 2.08 x 10²in standard form.

208

0.0208

20,800

0.208

15.

15.6 L = ___________ mL

15,600

156,000

1,560,000

15,600,000

16.

32.9 km = ___________ cm

32,900

329,000

3,290,000

32,900,000

17.

Convert 210 mm to cm

2.1 cm

21 cm

210 cm

2100 cm

18.

Compare 1.00 mol of Mg and 1.00 mol of O. Which of these are correct

They will contain the same number of atoms

There will be more atoms of O than Mg

They will have the same mass

The O will have greater mass than the Mg

The Mg will have greater mass than the O

19.

Compare 20.0 g of Mg and 20.0 g of O. Which of these are correct?

They will contain the same number of atoms

They will have the same mass

There will be more atoms of O than Mg

There will be more atoms of Mg than O

20.

Compare 24.3 g of Mg and 16.0 g of O. Which of these are correct?

They will contain the same number of atoms

There will be more atoms of O than Mg

They will have the same mass

The Mg will have more atoms than the O?

The Mg will have greater mass than the O

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U03 Mole Conversions

Total questions: 20

Worksheet time: 2hrs 30mins

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