How many grams of CaCl2 are needed to produce 10.0 grams of NaCl? 3 CaCl2 + 2 Na3PO4 → Ca3(PO4)2 + 6 NaCl
(round to 3 sig figs)
a 9.50
b 12.4
c 534
d 6.89

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

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li