What stores groundwater and let's ground water flow through it?!

At 25 degrees Celsius 12M H2O2 is decomposed. After 30 minutes the concentration of the H2O2 is found to be 9.5M. What is the average reaction rate for this decomposition reaction? I did it and got 0.

The process of filtration was used to separate a sample into its components. What conclusion about the sample can be formed based on the technique used? It was a pure substance. It was a compound. It was a heterogeneous mixture.

Is the concentration of 25 cm3 solution same as 250 cm3 solution?

Describe four stresses that upset the equilibrium of a chemical reaction

One of the more important chemical reactions of the alkanes is

7. Which of the following pairs of atoms are isotopes? a) C14 & N14 b) U235 & U238 c) C12 & C12 d) C12 & N14 e) None of the choices are correct

Which property of an object changes when an unbalanced force acts on it? A. Mass B. Inertia C. Velocity D. Temperature

The formula mass of a compound

Suppose the volume of a container is decreased, but the same number of gas molecules is present at the same temperature. What will happen to the molecules? The molecules will increase in number. The molecules will decrease in number.

Zinc metal reacts with hydrochloric acid to produce hydrogen gas and an aqueous solution of zinc (ii) chloride. what is the reducing agent in this reaction? maybe prof. umbridge was right in trying to remove her.