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a sample of hydrated NiSO4 witha mass of 4.414g is heated to remove all water crystallisation. The resultant mass is 2.287g. How many H2O molecules to each NiSO4 were there in the original sample

Mr of NiSO4 is 154.8 g/mol Mr of H2O is 18 Mass of NiSO4 in sample is 2.287 g Mass of H2O in sample is 4.414-2.287 = 2.127g divide mass of each of NiSO4 and H2O by Mr to obtain the ratio in moles NiSO4: 2.28...
CS
Answered by Calum S. • Chemistry tutor
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Can you explain acylation?

Acylation is a broad term for any reaction where an acyl group is added to a compound. An acyl group is comprised of a ketone group (C=O) with an alkyl group attached to the carbon. RCO(-) is the general not...
RL
Answered by Ryan L. • Chemistry tutor
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What is the difference between an ionic and covalant bond?

A covalant bond is a very strong bond between two atoms. These atoms share a pair of electrons and form molecules. An ionic bond occurs between two ions (charged atoms). Ions form when an atom loses or gains...
AS
Answered by Anokhi S. • Chemistry tutor
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How does infrared spectroscopy work and where might you see it used in real life?

Infrared radiation has a longer wavelength than visible light, and is also called thermal radiation. The chemical bonds in molecules absorb infrared radiation at characteristic frequencies, which means it ca...
MN
Answered by Mari N. • Chemistry tutor
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Write equations and give the mechanism for the reaction of butanone with: 1) NaBH4 and 2) HCN

The first thing we need to do in this type of organic chemical reaction, is identify our electrophiles and nucleophiles. We know that due to the electronegativity of the oxygen atom in carbonyl compounds tha...
HS
Answered by Harry S. • Chemistry tutor
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