What is a chemical reaction? a. a process of bonding substances together
B. a process that leads to have filled valence shells
following the octet rule
C. a process that releases or consumes energy
D. all of the choices

Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?