For the reduction reaction $$2no(g)+2h2(g) n2(g)+2h2o(g) which occurs at high temperatures, the experimentally determined rate law is: rate = k[no]2[h2] here is a proposed mechanism for the reduction of no by h2: elementary step 1: $$h2(g)+no(g) n(g)+h2o(g) elementary step 2: $$n(g)+no(g) n2(g)+o(g) elementary step 3: $$h2(g)+o(g) h2o(g)

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.