The molecular formula for caffeine is c8h10n4o2. which of the following elements is not found in caffeine?

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

How many grams of aluminum will there be in 98g of al2o3?

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.