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What is a formula of Potassium Sulfate?

First, look at the Periodic Table. Potassium is in group 1 so has a +1 charge, Li + Sulphates always have a -2 charge, SO4 2- Now combine two ions together so we can get a neutral compound. We have +1 charge...
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Answered by Laura B. • Chemistry tutor
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What is a rate of reaction? How can we calculate the rate of reaction?

Rate of reaction is a change in concentration of a reactant or product, per unit time, measured in dm 3 s-1. You can calculate the rate of reaction from the graph- plot the graph of concantration of reactant...
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Answered by Laura B. • Chemistry tutor
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Define the terms atomic number and mass number

The atomic number, Z, is the number of protons in the nucleus. The mass number ,A, is the total number of protons and neutrons in the atom.
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Answered by Laura B. • Chemistry tutor
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what is a simple test to detect the presence of a carbonyl and to identify it?

A carbonyl is either a ketone or an aldehyde. In order to see whether the carbonyl group is present (C double bond O), 2,4-dinitrophenylhydrazine must be used. If an orange/yellow precipate is formed, then a...
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Answered by Zahra M. • Chemistry tutor
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How are amino acids involved in condensation and hydrolysis reactions?

A condensation reaction is where two small molecules react together to form a larger molecule with the elimination of a small molecule like water. Two amino acids can react in a condensation reaction to form...
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Answered by Zoe C. • Chemistry tutor
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