Final Exam Review: Mix of Stuff

When converting from moles to grams, you would ...

• divide by the # of moles of the substance in the equation

• divide the molar mass of the substance

• multiply by the # of moles of the substance in the equation

• multiply by the molar mass of the substance

What is the molar mass of iron (III) chloride?

• 91.298 g/mol

• 162.2 g/mol

• 1979.87 g/mol

• 55.845 g/mol

• 35.453 g/mol

What is the molar mass of Mg₃(PO₄)₂

• 71.279 g/mol

• 231.889 g/mol

• 199.889 g/mol

• 7 g/mol

• 262.855 g/mol

Identify each type of reaction.

b

c

d

synthesis

double replacement

combustion

single replacement

decomposition

• 5
• 2
• 1
• 4
• 3
• 6
• 11
• 9

• LiAl + Cl₂

• AlCl + Li

• AlLi + Cl₂

• LiCl + Al

• decrease the pressure of the system

• increase the amount of magnesium

• decrease the amount of magnesium

• add a catalyst

Particle size affects the ​ (a)   of reaction because, ​ (b)   the particle size ​ (c)   the ​ (d)   area, which increases the frequency of ​ (e)   .

• rate
• decreasing
• increases
• surface
• collisions

Metals must be ​ (a)   before ​ (b)   is emitted because the heat provides enough ​ (c)   to move an ​ (d)   into a ​ (e)   energy orbital.

• heated
• light
• energy
• electron
• higher

Label the diagram.

a

b

c

photon emitted

energy released

energy absorbed