How much heat in kJ is released for the reaction below if the reaction is limited by 450 g of oxygen? C6H12O6 + 6O2 → 6CO2 + 6H2O ΔH = -2803 kJ

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

Which of the following is not true about the atomic model of substances?

Arectangle has a diagonal 20 inches long that forms angles of 60 and 30 with the sides. find the perimeter of the rectangle. for geometry