Calculate the mass of calcium sulfate that can be produced when 4.070g of calcium oxide react with excess sulfuric acid

Explanation:

1. Find the balanced equation:

2. Find the molecular weight of the

Atomic weight of Ca = 40

Atomic weight of S = 32

Atomic weight of O = 16

Molecular weight of = 40 + 32 + (4*16)

Molecular weight of = 136

3. Use the stoichiometry to find the mass of that can be produced:

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.