Suppose that you have two cubes of exactly the same volume. You weigh them and find a mass of 8.91g for one cube and 8.88g for the other cube even though they are made of the same material. How is this possible?

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2

What is produced from neutralization of an acid and a base? a. hydronium ions b. citric acid c. salt and water

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.