Unit 5 Quiz Review

How many moles of H are in 0.023 mol (NH₄)₂SO₄

• 0.092 mol

• 0.023 mol

• 0.184 mol

• 0.046 mol

A sample of silver contains 5.71 x 10²² atoms. How many moles of silver are present?

• 3.43 x 10⁴⁶ moles

• 0.0529 moles

• 0.0948 moles

• 10.5 moles

Tags

NGSS.HS-PS1-7

How many atoms are present in a 0.0254 mole sample of gold?

• 0.25 atoms

• 1.528 x 10²² atoms

• 4.22 x 10^-25 atoms

• 5 atoms

Tags

NGSS.HS-PS1-7

Which of the following shows the correct setup to determine the number of moles in a 12.0 gram sample of Cl₂?

• 12/35.5 mole

• 12/71 mole

• 12 moles

• 12 x 35.5 moles

Tags

NGSS.HS-PS1-7

Vitamin C, also known as ascorbic acid, is water soluble and cannot be produced by the human body. Each day, a person's diet should include a source of Vitamin C, such as orange juice. Ascorbic acid has a molecular formula of C₆H₈O₅ and a molar mass of 176 grams per mole.

Determine the number of moles of C in 237 mol of ascorbic acid

• 1056 mol

• 1185 mol

• 1422 mol

• 1896 mol

What is the molar mass of calcium hydroxide, Ca(OH)₂?

• 74.1 g/mole

• 57.1 g/mole

• 58.1 g/mole

• 57.1 u

What is the percent of Au in AuCl₃?

• 35.06%

• 153.98%

• 52.00%

• 64.94%

What is the molar mass of Zn(C₂H₃O₂)₂?

• 392.8g/mol

• 142.9g/mol

• 361g/mol

• 183.5 g/mol

What is the percent of C in C₆H₁₂

• 85.60%

• 14.40%

• 55.60%

• 116.82%

How many moles of O are in 32.99 mol SO₂?

• 13 mol

• 16.50 mol

• 32.99 mol

• 65.98 mol

Tags

NGSS.HS-PS1-7