In the combustion chamber of an engine, the initial volume is 450 cm3 at a pressure of 1.0 atmosphere. if the piston displaces 402 cm3 of the total, what is the resulting pressure in the combustion chamber? (assume negligible temperature change.) hint: calculate the new volume by subtracting the amount of space the piston takes up from the initial volume

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 .

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

Define dew point. i am writing this part to be able to ask the question