How many kilojoules of heat are produced when 6.39 mol of Al react? 2Al(s) + Fe2O3(s) → 2Fe(s) + Al2O3(s) heat of reaction = –851.5 kJ

? you expect us to answer this? ? this is your schoolwork, i don't think we can with this, i think it would considering being

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

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.