Moles to Grams and Grams to Moles

How many moles are in 3.01 x 10²² atoms of magnesium, Mg?

• 0.05 moles

• 1.81 X 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

Tags

NGSS.HS-PS1-7

How many atoms are in 6.5 moles of zinc, Zn?

• 4.2 atoms

• 3.91 X 10^-24 atoms

• 3.91 x 10²⁴ atoms

• 5 x 10²⁴ atoms

Tags

NGSS.HS-PS1-7

When you are solving for molecules, atoms, and particles you always use what number?

• 6.02 X 10²³

• Lucky 7

• Guess

• 24

Tags

NGSS.HS-PS1-7

How many moles are in 19.82 g Mg?

• 1.23 mol Mg

• 481.70 mol Mg

• 1.00 mol Mg

• 0.82 mol Mg

Determine the mass of 4.20 moles of C₆H₁₂

• 354 g

• 84 g

• 337 g

• 421 g

How many grams are in 1.2 moles of Neon?

• 0.05 grams

• 16.6 grams

• 21.2 grams

• 24 grams

Use the given the chemical equation to answer the following question: 2C₂H₆ + O₂ → 4CO₂ + 6H₂O What does the number 4 represent for the formula unit 4CO2 ?

• The number 4 represents the coefficient, which is also equal to the number of grams of the formula unit above.

• The number 4 represents the subscript, which is also equal to the number of moles of the formula unit above.

• The number 4 represents the coefficient, which is also equal to the number of moles of the formula unit above.

• The number 4 represents the subscript, which is also equal to the number of grams of the formula unit above.

Convert 3.5 moles of water (H2O) to grams.

• 63 g

• 18 g

• 63.5 g

• 63.3 g

How many moles are in 88 grams of carbon dioxide (CO2)?

• 2 moles

• 1 mole

• 4 moles

• 3 moles

If you have 5 moles of sodium chloride (NaCl), what is its mass in grams?

• 292.5 g

• 58.5 g

• 117 g

• 250 g