How many hydrogen are in 4.02 grams in water

Which of the following statements about enzymes is false? A. they increase the rate of chemical reactions. B. They function as chemical catalysts. C. They are monomers used to build proteins. D.

Find pH for lemon juice pH = - log[0.00500]

A laboratory requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solution. How could you prepare the solution needed for the lab experiment? show all work to find your answer

Nitrogen gas is a diatomic molecule. what is the mass of one mole of nitrogen gas?

The two factors that are most important in determining the density of air are: a. temperature and ozone. b. temperature and salinity. c. temperature and water vapor content. d. nitrogen and water vapor content. e.

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda