What is the mass of an object with a density of 8.86g/cm3 and a volume of 6.80x10²cm3?

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%

Why does his teacher ask him to balance the equation by including the correct coefficient

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?