A rock weighing 26.0 g is placed in in a graduated cylinder displacing the volume from 13.2mL to 25.3 mL. What is the density of the rock in grams/cubic centimeter?

How many pair lone and unpair in electron in nitrogen, carbon and oxygen

How many NADH are produced by glycolysis?

Why this chemical equation 3P4 + 10O2 = 4P2O5 + P4 is wrong?

If you breathe normally you have about 0.11 moles of air in your lungs and a volume of 2.4 L. If you then take a deep breath all the way, you will have 0.27 moles of air in your lungs. How big will your lungs be?

The three-dimensional structure of macromolecules is formed and maintained primarily through noncovalent interactions.

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as (1) an ionic compound (2) a molecular compound (3) a metal (4) a nonmetal

What is done with the reactive sodium after the reaction to make sure the products are safe in an air bag?

Which of the following does not indicate a chemical change? precipitate formation crushing a solid into a powder color change gas evolution

Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called?

What are the products of the alpha decay of Iodine-131?