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Using the formula mass=Mr * moles we can rearrange this so it equals moles= mass / Mr. We are told the mass of the NaCl is 50g however we need to work out the Mr (relative formula mass) of the NaCl too. W...
Graphene is a giant covalent compound made purely of carbon atoms. Within graphene each carbon atom is covalently bound to just 3 other carbon atoms. A carbon atom usually makes 4 covalent bonds. This mea...
Diamond – The electrons are tightly bound between the atoms. Bonds are difficult to break as they are held firmly together hence diamond has a hard structure. Diamond does not have free electrons to carry...
Ethanoic acid is CH3COOH. Acids can ionise, producing H+ ions and in this case, CH3COO (ethanoate) ions. The sodium exists as Na+ ions in solutio...
The amount in moles of a solute in a solution in a given volume of solution can be calculated if the concentration of the solution is also known. The equation for concentration is: Concentrati...
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