Calculate the mass of nitrogen gas (N2) that is needed to react with 1.050 grams of oxygen gas (O2) to form nitrogen dioxide (NO2).  Hint: Write the balanced equation first; there are no additional products nor reactants.

When a liquid changes to a gas, the process is called ____________.

The shape around the oxygen atom in the diagram is:

Which of the following cannot form hydrogen bonds?

What is the density of argon gas at STP?

How many hydrogen atoms are in one molecule of (NH4)3Fe(HSO3)6?

The portion of the endometrium that is not sloughed off every month is called the _____________.

Digestion of carbohydrates and proteins by brush border enzymes occurs within the __________ of the small intestine.

Past Exam Questions You are awaiting the white blood cell differential results for a patient who presented with a ruptured appendix and peritonitis. Which type of leukocyte do you expect to be most elevated over its normal value?

Which of the following is not a stimulus for breathing?