What is the molarity of a 650. ml solution containing 64 grams of nacl?

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

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 .

How many joules of heat are required to raise thetemperature of 750 g of water from 11.0 °c to 19.0 °c?