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Chemistry
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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, th...

ES
Answered by Eduardo S. Chemistry tutor
4205 Views

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 t...

EB
Answered by Emily B. Chemistry tutor
20093 Views

Explain electrophilic aromatic substitution?

Electrophilic aromatic substitution (SEAr) is an organic reaction in which an atom that is attached to an aromatic system (usually hydrogen) is replaced by ...

DJ
Answered by Dafydd J. Chemistry tutor
4313 Views

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<...

DJ
Answered by Dafydd J. Chemistry tutor
7763 Views

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

EM
Answered by Emma M. Chemistry tutor
3313 Views

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