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How do mass spectrometers measure the mass of a compound?

Mass spectrometry is a method of identifying the molecular mass of compounds by measuring its mass to charge ratio. Methods vary depending on the molecules being analysed, their phase, the wanted sample inse...
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Answered by Eduardo S. • 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...
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Answered by Emily B. • Chemistry tutor
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Explain electrophilic aromatic substitution?

Electrophilic aromatic substitution ( S E Ar ) is an organic reaction in which an atom that is attached to an aromatic system (usually hydrogen) is replaced by an electrophile. An electrophile is reagent tha...
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Answered by Dafydd J. • 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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