Honors Chemistry Chapter 8-10 Review

The primary greenhouse gas is carbon dioxide.

• True

• False

Given the recipe: 2 cups flour + 1 egg + 3 oz blueberries → 4 muffins.

You can make 9 muffins from 3.5 cups of flour.

• True

• False

Given the reaction: 2 Na(s) + Cl2(g) → 2 NaCl(s)

The conversion factor for chlorine gas to sodium metal is: 2 mol Cl ≡ 2 mol Na

• True

• False

The conversion factor between mass and moles for a compound is the molar mass.

• True

• False

The limiting reactant is the reactant that produces the maximum amount of product.

• True

• False

The percent yield is calculated by dividing the actual yield by the theoretical yield times 100.

• True

• False

The enthalpy of reaction, △H rxn, is the amount of thermal energy that flows when a reaction occurs at constant temperature.

• True

• False

Since heat must be supplied to melt ice, the melting of ice is an endothermic process and so has a positive enthalpy value.

• True

• False

The average global temperature depends on all factors EXCEPT

• The amount of incoming sunlight

• The amount of outgoing heat lost to space

• the amount of greenhouse gas

• the angle of the earth's surface in relation to the incoming sunlight

How many eggs are needed to make 1 dozen waffles, assuming you have enough of all other ingredients?

Given: 2 cups flour + 3 eggs + 1 tbs oil → 4 waffles

• 9

• 16

• 48

• 12