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What are moles in Chemistry?

The moles is the amount of a substance that we are measuring, its like measuring how many coins I have in my pocket, but instead how many atoms of an element we have. We use the equation moles=mass/RMM to wo...
LP
Answered by Lucy P. • Chemistry tutor
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What is an isotope?

Each element has a unique number of protons. For example, every carbon atom contains 12 protons. The number of neutrons can differ for each "form" of the same element - this is known as an isotope....
JG
Answered by Joanna G. • Chemistry tutor
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Describe the difference in boiling point, colour and viscosity between the fuel oil and gasoline fractions.

The fuel oil fraction has a higher boiling point. It is also dark brown in colour while the gasoline fraction is yellow. It is also more viscous (thicker and flows less easily) due to the fuel oil molecules ...
JJ
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What's the difference between an atom and an ion?

Atoms and ions are both made up of proton's and neutrons in the nucleus with electrons orbiting around. The difference is atom's have equal number of proton's and electrons while ions have more or less elect...
OB
Answered by Oliver B. • Chemistry tutor
10911 Views

Outline the limestone cycle including the relevant equations.

Calcium carbonate undergoes thermal decomposition to form calcium oxide and carbon dioxide. Calcium Oxide (CaO) can undergo an exothermique réaction with water to product Calcium Hydroxide, also known as sla...
PM
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