A) how much has ph of pure water in equilibrium with the atmosphere changed between pre-industrial times and 2019? ( for information and co2 concentration now grows at 2.1 ppm/year)
b) predict your life expectancy and when you would take your last puff of atmospheric co2 based on typical life expectancy in the united states. calculate the expected pco2 by that time. what would the ph of pure water in equilibrium in the atmosphere by then?

Nitric oxide (no) can be formed from nitrogen, hydrogen and oxygen in two steps. in the first step, nitrogen and hydrogen react to form ammonia: n2(g) + 2 h_2(g) rightarrow 2 nh_3 (g) delta h = -92. kj in the second step, ammonia and oxygen react to form nitric oxide and water: 4 nh_3(g) + 5 o_2(g) rightarrow 4no(g) + 6 h_2o(g) delta h = -905. kj calculate the net change in enthalpy for the formation of one mole of nitric oxide from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96

Nan element’s square on the periodic table, the number with the greatest numerical value represents the