Chemistry HESI A2 Practice Test

HESI A2

HESI A2 Test Bank

If gas A has four times the molar mass of gas B, you would expect it to diffuse through a plug ___________.

A. at half the rate of gas B B. at twice the rate of gas B C. at a quarter the rate of gas B D. at four times the rate of gas B

How many times more acidic is a substance with a pH of 3 compared to a substance with a pH of 5?

A. 8 B. 2 C. 100 D. 1,000

What is the number of protons in the atomic nucleus of an alkali metal?

A. 9 B. 10 C. 11 D. 12

Carbon-12 and carbon-14 are isotopes. What do they have in common?

A. Number of nuclear particles B. Number of protons C. Number of neutrons D. Mass number

What is the normal body temperature in Fahrenheit?

A. 96�F B. 98.6�F C. 100�F D. 95�F