Which of the following statements is/are true for a 0.10 m solution of a weak acid ha? (a) the ph is 1.00 m (b) [h+ ] > > [a - ] (c) [h+ ] = [a -

What is the study of how matter and energy interact? a. biology b. physics c. planetary science d. chemistry

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 .

All of the following are part of the biosphere except