Explain the following observations:

a. More sugar dissolves in hot tea than in iced tea.

b. Champagne in a warm room goes flat.

c. A warm can of soda has more spray when opened than a cold one.

You observe that sugar dissolves more quickly in hot tea than in iced tea. You state that higher temperatures increase the rate at which sugar dissolves in water. Is this statement a hypothesis or a theory? Why?

Explain the observation: more sugar dissolves in hot tea than in iced tea.

What volume (mL) of a $15\ \% (m/v)$ NaOH solution contains $120\ \mathrm{g}$ NaOH?

A) $18\ \mathrm{mL}$

B) $0.13\ \mathrm{mL}$

C) $13\ \mathrm{mL}$

D) $120\ \mathrm{mL}$

E) $8\times 100\ \mathrm{mL}$

What volume (ml) of a 15% (m/v) NaOH solution contains 120 g NaOH?

Acetic acid can be classified as a(n) ______.
A. ionic compound
B. weak electrolyte
C. gas
D. solid
E. strong electrolyte

When some of the sugar added to iced tea remains undissolved on the bottom of the glass, the solution can be described as:

A. dilute

В. рolar

C. nonpolar

D. saturated

E. unsaturated

The O-H bond in water is polar because:

a) oxygen occupies more space than hydrogen

b) oxygen is much more electronegative than hydrogen

c) it is a hydrogen bond

d) it is an ionic bond

The O-H bond in water is polar because?

According to Henry’s law, how do partial pressure and solubility of a gas affect its concentration in a liquid?

Describe the formation of an aqueous KI solution.

Describe the formation of an aqueous KI solution, when solid KI dissolves in water.

Identify the solute and the solvent in each solution composed of the following:

a. 50.0 g of silver and 4.0 g of mercury

b. 100.0 mL water and 5.0 g of sugar

c. 1.0 g of I$_2$ and 50.0 mL of ethanol(l)

A mixture is prepared by dissolving $\pu{2 g}$ of $\ce{KCl}$ in $\pu{100 g}$ of $\ce{H2O}$. In this mixture, $\ce{KCl}$ is the

a. solute.
b. solvent.
c. solution.
d. solid.
e. ionic compound.