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What is the relative formula mass of sodium chloride?

58.5 Relative formula mass (M r ) is found by adding together the relative atomic masses (A r ) of all the atoms present in a compound. Sodium Chloride is NaCl. The relative atomic masses can be found in the...
JS
Answered by Jenny S. • Chemistry tutor
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Why are alkanes saturated and alkenes unsaturated?

Alkanes are saturated because they contain only single covalent bonds. Alkenes are unsaturated because they do have double covalent bonds.
CM
Answered by Calum M. • Chemistry tutor
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What is the mass (g) of 0.25mols of NaCl?

What you need for these equations are a calculator, periodic table and the following equation: Mass (g) = Mr x Moles (important equation to remember) In this case we already know the moles as it's in the que...
EB
Answered by Emily B. • Chemistry tutor
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Explain the atomic structure of an Atom?

An Atom is made up of 3 parts, protons, neutrons and electrons . Each element has it's own number of protons and electrons which will always be the same number . The protons and neutrons make up the nucleus ...
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Answered by Dafydd J. • Chemistry tutor
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What is the concentration of 0.4 moles of 25cm3 ethanoic acid?

concentration = moles / volume must convert volume into litres 1 litre = 1000cm3 (divide by 1000) c= n/v = 0.4/0.025 = 16mol/l
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Answered by Emma M. • Chemistry tutor
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