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Sodium chloride is an ionic compound. It is made of sodium ions which have lost an electron to become positively charged (Na+) and chloride ions which have gained an electron to become negatively charged ...

An exothermic reaction is one where the products have less energy than the starting reactants.  This means the reaction must give out energy, usually in the form of heat or sound.  As a result of this, H ...

1. Identify the limiting reagent: you have been told sodium hydroxide is in excess, so you know sulfuric acid is the limiting reagent

2. Calculate the moles of the limiting reagent: ...

A fossil fuel is a substance like coal, oil, or natural gas formed from decayed plant or animal remains which can be burned to produce energy and power. Crude oil is separated by fractional distillation -...

Relative atomic mass is the mass of one atom of an element compared to 1/12 of the mass of an atom of carbon-12.