Calculate the enthalpy of neutralization for the reaction between NH3 and HCl in kilojoules per mole.

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

The fact that the total amount of energy in a system remains constant is a(n)

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o