In salt water, which substance is the solute?

The salt, because it is the dissolved substance

Why does a polar solute like sugar dissolve well in water?

Water is polar, and like dissolves like

A strong acid ionizes completely; a weak acid ionizes only partly

12questions. Pick an answer and you'll see why right away.

In salt water, which substance is the solute?
Which change increases the rate of dissolving but not the maximum amount that can dissolve?
Why does a polar solute like sugar dissolve well in water?
What is the molarity of a solution containing 0.50 mol of solute in 0.25 L?
100 mL of 6.0 M solution is diluted to 300 mL. What is the new concentration?
How is an acid defined in terms of ions in water?
A solution has a pH of 4. Is it acidic, neutral, or basic?
How does the hydrogen ion concentration at pH 3 compare with pH 5?
What are the products of a neutralization reaction between an acid and a base?
In a 1 to 1 titration, 20.0 mL of 0.100 M base neutralizes 25.0 mL of acid. What is the acid's concentration?
What gas is produced when an acid reacts with a reactive metal?
What is the difference between a strong acid and a weak acid?