1. Which of the following substances is believed to be responsible for the hole in the ozone layer?
A. Ammonia
B. Chlorofluorocarbons (CFCs)
C. Lead
D. Carbon monoxide

Each pair of clay balls represents to planetesimals if each plane test molluscum pound of the same material and is separated by the same distance which pair experiences the greatest gravitational attraction

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

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