Which of the following could be used to describe the rate of a reaction?

change in time/change in concentration

change in mass/change in concentration

change in concentration/change in time

change in concentration/change in mass

Bohr's model of the atom predicted that atoms would be unstable when electrons orbit the nucleus, which was proved to be untrue. True or false

The formula for Gibbs free energy is: Ο ΔG = ΔS + TΔΗ Ο ΔG - ΔΗ - TΔS Ο ΔG - ΔS - TΔΗ Ο ΔG = ΔΗ + TAS

The chemical equation below shows the combustion of methane (CH4). CH4+2O2--CO2+2H2O The molar mass of oxygen gas (O2) is 32.00 g/mol. The molar mass of carbon dioxide (CO2) is 44.01 g/mol. What mass of CO2, in grams, will firm when 8.

The type of radiation which is identical to a high energy electron is known as a (n)

Number of O atoms in 7.3 x10^-3 g of CaSO4 x 2H2O

What is the element 3O2 name

Why sulphur used for food preservation?

How would a solution that is labeled 5.0 molar be similar to one labeled 5.0 molal?

Calculate the percentage by mass of nitrogen in ptcl2 (nh3) 2.

Below are the structures of three fatty acids, palmitic acid, stearic acid, and oleic acid. what combination of these fatty acids could you use to make a fat that is liquid at room temperature?