Final Review

Only ____ molecules have London dispersion forces

• Ionic

• Polar Covalent

• Nonpolar Covalent

• All molecules

which rxn is exothermic?

• left

• right

In exothermic rxn:

Products are more or less stable than reactants

• more

• less

In endothermic rxn:

Products are higher or lower in energy

• higher

• lower

How many unpaired electrons does Carbon have?

• 6

• 4

• 2

• 3

CaO (s) + C (s) → CaC₂ (s) + CO₂ (g)

Consider reacting 10 mol CaO with 10 mol of C

Determine the moles of reactant left over

Hydrogen bonding ONLY occurs when H is bonded to:

• N

• C

• O

• F

• H

A certain ion has a charge of 2+ and 27 electrons. Which ion is it?

• Mn²⁺

• Cu²⁺

• Co²⁺

• Ga²⁺

• Si²⁺

What is the mass of one atom of copper in grams?

• 63.5 g

• 52.0 g

• 58.9 g

• 65.4 g

• 1.06 x 10^-22 g