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Describe the differences between regional and contact metamorphism.

Metamorphism is the the solid state change of minerals and textures within a pre existing rock (country rock) as a result of changing pressure/ temperature conditions. Fluids such as H2O also play a very imp...
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Answered by Ben W. • Geology tutor
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What is the most common measure of inequality and what is inequality itself?

Inequality is present in income, opportunity and wealth amongst others. Income inequality is the most common form of inequality and it takes into consideration the difference in incomes amongst individuals i...
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Answered by Laura C. • Economics tutor
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What is a mutation and what are they caused by?

A mutation is a change in the base sequence of DNA. A mutation can be caused by a mistake during replication of DNA or by mutagenic agents. Mutagenic agents include chemicals that can act as bases or radiati...
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Answered by Nadine K. • Biology tutor
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NaOH is a strong base. An aqueous solution is made containing 0.300mol.dm^-3 of NaOH at room temperature. Calculate the pH of this solution.

Concentration of NaOH=Concentration of OH- ions (NaOH is a strong base) Kw=1x10^-14 (at room temperature/25 degrees) using Kw=[H+][OH-] We can figure out the [H+] [H+]=Kw/[OH-] [H+]=(1x10^-14) / (0.300) Now ...
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Answered by Nadine K. • Chemistry tutor
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What is an optical isomerism?

Optical isomerism is a type of stereoisomerism which includes a chiral carbon. This means the pair of molecules have the same structural formula but the four different groups around the carbon atom are arran...
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Answered by Nadine K. • Chemistry tutor
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