Pearson Chemistry Chapter 10 Test

What is the mass of one mole of Al₂(SO₄)₃?

• 75.0 g

• 342.1 g

• 75.0 mol

• 342.1 mol

How many moles of carbon atoms are there in 5g of carbon?

• 60 mol
• 17 mol
• 0.42 mol
• 7 mol

How many molecules are there in 5.9 moles of NaCl?

• 3.6 x10²⁴molecules

• 9.8 x10^-24molecules

• 1.0 x10²³molecules

• None of the above

How many moles are there in 12.7g of CaF₂?

• 0.20 mol
• 1,000.76 mol
• 6.14 mol
• 0.16 mol

The molar mass of an element is equal to its...

• Atomic mass
• Atomic number
• Oxidation number
• Valence electrons

What is the molar mass of CO₂?

• 12.0 g/mol

• 16.0 g/mol

• 32.1g/mol

• 44.0 g/mol

How many particles are in a mole?

• 602
• 602 million
• 602 moles
• 6.02 x 10²³

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

Calculate the molar mass for Al(OH)₃

• 78.0 g/mol

• 72 g/mol

• 28 g/mol

• 25 g/mol

At STP, 1 mol, or representative particles, of any gas occupies a volume of......................

• 24.4 L

• 44.2 L

• 22.4 L.

• 6.02 x 10²³ L