Which one of these is an element?

a. air

b. water

c. oxygen

d. sodium chloride

If I divide 6,048 by divided by 8 what does it equal

Does the arrangement of particles stay the same from one state to another?

What elements are the most stable

State the law of conservation of mass. Then apply the law to this question: what would be the total mass of the products of a reaction in which 10 grams of water decomposes into elements hydrogen and oxygen?

What unit of measure does pressure need to be in for the combined gas law?

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?

An excess of NiCO3, 12 g, was added to 40cm cube of sulpheric acid, 2.0 mol/dm cube. The unreacted nickel carbonate was filtered out and the filtrate evaporated to optain the crystals.