How much energy is generated from freezing 2.5 g water? A. 2.5 g < 1 mol/18.02 g < (285.83) kJ/mol
B. 2.5 g < 1 mol/18.02 g * (-285.83) kJ/mol
C. 2.5 g x 1 mol/18.02 g x 4.186 kJ/mol
O D. 2.5 g x 1 mol/18.02 g x 40.65 kJ/mol

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 .

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude