Mole Conversions

What is the correct molar mass for zinc hydroxide, Zn(OH)₂?

• 83.41 g

• 99.41 g

• 83.41 amu

• 82.38 g

What is the correct molar mass of Ag₃PO₄?

• 418.58 g/mol

• 387.61 g/mol

• 154.84 g/mol

• 52.32 g/mol

Determine the mass of 4.20 moles of C₆H₁₂

• 353 g

• 0.0499 g

• 337 g

• 2.53 x 10²⁴ g

Tags

NGSS.HS-PS1-7

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.0 moles

• 1420 moles

• 32.3 moles
• 0.734 moles

How many water molecules are in 5.2 moles of water?

• 6.02 x 10²³
• 5.2
• 3.1 x 10²⁴

• 8.6 x 10^-24

What is the mass of 1.2 x 10²⁴ atoms of C?

• 2.0 grams

• 24 grams

• 0.17 grams

• 1.4 x 10²⁵ grams

Tags

NGSS.HS-PS1-7

How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)₃?

• 1.26 moles

• 0.8 moles

• 7,670 moles

• 1.63 x 10^-22 moles

Tags

NGSS.HS-PS1-7

Which of the following dimensional analysis setups will correctly convert 4.00x10²³atoms of cobalt to moles of cobalt? How many moles of colbalt are there?

• setup B : 0.664 mol Co

• setup A: 2.41x10⁴⁷mol Co

• setup A : 0.664 mol Co

• setup B: 2.41x10⁴⁷mol Co

Tags

NGSS.HS-PS1-7