Why does Europe, the USA, and Canada have acid rain?

Any substance which yields a hydrogen ion when placed in a water solution is call an--- A. Acid B. indicator C. Base D. Salt

Why is argon and chlorine both gases at room temperature?

What is an example of a chemical change that happens inside your body?

Molecular mathematics

How can one increase the rate of a chemical reaction? a. Decrease the concentration of the reactants. b. Add a catalyst. c. Increase the activation energy needed. d. Increase the entropy of the reactants. e. Cool the reactants.

Students conduct an experiment in which steel wool is burned in a closed test tube. The steel wool reacts with an amount of oxygen equal to 1.43% of the mass of the steel wool. What is the correct value for the missing mass in the table?

Which of the following properties of water allows an insect to "climb" up a tube? Capillary action Cohesion Adhesion Density

What is the pOH of a solution with [OH-] = 2.0 10-2? A. 2.00 B. - 1.70 C. 3.01 D. 1.70

How many protons are in an ion with 54 electrons and a - 1 charge?

Which of the following experimental observations proved that the idea of matter and mass being evenly distributed in an atom was flawed? A. Less than 1% of the alpha particles went un-deflected through the gold foil. B.