Why is it important to repeat the steps or an experiment multiple time

What ions are found when the following compounds dissolve in water. (a) sodium nitrate (b) sulfuric acid, sodium hypochlorite, and sodium carbonate.

How many hydrogen atoms are in 4.00 mol of ammonium sulfide?

Which of the elements has the same lewis structure as sulfur?

A solution is made by mixing 30.0 mL of 0.150M (mol/L) compound A with 25.0 mL of 0.200M (mol/L) compound B. At equilibrium, the concentration of C is 0.0454M. Calculate the equilibrium constant, K, for this reaction.

2. The number of protons in one atom of an element determines the atom's ., and the number of electrons determines of and element. to the number of

c. When we heat water up by the Bunsen burner, what temperature is the boiling water? After 10 minutes

Assuming that air contains 78 percent N2, 21 percent O2 and 1 percent Ar, all by volume. How many molecules of each type of gas are present in 1.0 L of air at STP?

Two children are playing tag. Child A who is doing the chasing can run 100m in 24 seconds Child B is running away from child A and can run 64m in 21 seconds.

What ion does a base increase

What is the definition of Amplitude?