2C8H18+25O216CO2+18H2O when 52.7g of CO2 is 82.5% what is its actual yield in grams

Calculate the number of molecules present in 0.750 mol of mgo.

What is the molecular weight of copper

Which of the following reactions is endothermic? h2(g) + ½ o2(g) h2o(g), h = -57.82 kcal ½n2(g) + o2(g) + 8.1 kcal no2(g) ½ n2(g) + 3/2 h2(g) nh3(g) + 11.0 kcal c(diamond) + o2(g) co2, h = -94.50 kcal