The volume of a gas at 2.0 atm is 3.0L. what is the volume of the gas at 1.5 atm at the same temperature?
A. 0.50 L
B. 1.0 L
C. 1.5 L
D. 4.0 L

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?