How many grams of KCl are necessary to make 2000 mL of a 4.00 M solution? (Atomic Weights: K = 39.098 and Cl = 35.45)

Express 0.000487 in exponent form.

A 125.0 mL, 3.50 M solution is diluted to 500.0 mL in a 500.0 mL volumetric flask. What is the concentration of the new solution?

What is [7.812 x 103]2? Round appropriately and report using the correct number of significant figures.

Convert 3.5 mg/mL to milligrams per liter.

Molarity can be defined as:

The standard unit of measurement for mass in the metric system is the:

In order to win the presidential election, a candidate must receive a majority of the electoral votes. How many electoral votes are required for a candidate to win the presidency?

Given a 1:3 ratio, indicate the total number of parts.

Critics of the Electoral College argue that it does not accurately reflect the will of the people, and several proposals have been made to reform or improve the system. Which of the following is one proposed reform to the Electoral College system?