Nitrogen gas will react with hydrogen gas to produce ammonia, NH3. How many moles of hydrogen gas are required to produce 0.86 moles of NH3?

Which of these describes the rate of this chemical reaction? h2 + cl2 → 2 hcl a. an increase in the concentration of hcl and h2 with time b. an increase in the concentration of hcl with time c. an increase in h2 and cl2 with time d. a decrease in hcl and cl2 with time