Approximately how many humans genes are there?

2points what is the job of a scientist? a. to answer ethical questions. b. to write laws based on his or her knowledge. c. to ask and answer scientific questions. d. to ignore facts that do not support his or her theory.

What is the mass of sodium in 3 moles of sodium chloride

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?