Unit 6 Chemistry review

What id the molar mass of UF₆?

• 101 g/mol

• 238 g/mol

• 257 g/mol

• 352 g/mol

What is the molar mass of Cl₂?

• 17 g/mol

• 35.5 g/mo;

• 71.0 g/mol

• 89 g/mol

Calculate the molar mass of KOH.

• 28 g/mol

• 56 g/mol

• 84 g/mol

• 112 g/mol

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

What is Avogadro's Number? 

• 6.02 x 10²²

• 6.02 x 10²³

• 6,020,000,000,000

• - 6.02 10²³

Tags

NGSS.HS-PS1-7

Avogadro's number of representative particles is equal to one_____.

• Kilogram

• Kelvin

• Mole

• Gram

How many particles (atoms) would be in 1 mole of Octane (C₈H₁₈)?

• I need more information.

• 6.02 x 10²³

• 1 x 10²³

• I do not know.

Convert 28.0 grams of O₂ to moles.

• 1.14 moles
• 1.75 moles
• 0.571 moles
• 0.875 moles

How many grams are in 5.6 moles of sodium bromide?

• 36.8 g/mol
• 18.4 g
• 576 g/mol
• 576 g

You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.

• SO

• SO₂

• SO₃

• SO₄