Chemistry Spring Semester Exam Review 2023

What is the molar mass of Ca(NO₃)₂?

• 164.03 g/mole
• 228.32 g/mole
• 150.02 g/mole
• 218.05 g/mole

36.0 g of Be contains how many moles?

• 0.25 mol
• 4.0 mol
• 45 mol
• 320 mol

Si + S₈ →Si₂S₄

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement

Ca + AlCl3→ CaCl_{2 +} Al

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement

KOH + H₃PO₄ → K₃PO₄ + H₂O

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement

Pb(NO₃)₂ →PbO + NO₂ + O₂

• Synthesis (combination)
• Decomposition
• Single replacement
• Combustion

Calculate the molar mass of NaBr.

• 22.99

• 79.90

• 102.9

• none of the above

Solutions that conduct a current are called ____________ and are made from ___________ compounds.

• electrolytes; ionic

• nonelectrolytes; ionic

• electrolytes; molecular

• electrolytes; covalent

If 400 mL of a 8.0 M solution is diluted to a molarity of 5.3M, about how much solvent volume was added?

• 200 mL

• 600 mL

• 400 mL

• 180 mL

This solution would be considered

• Unsaturated
• Supersaturated
• Saturated
• Undefined