Top answers

How many moles are in 6g of carbon?

moles = mass/mrn = 6/12n= 0.5
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Answered by Lucy O. • Chemistry tutor
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What is the hypotenuse of the triangle if the other 2 sides are 8cm and 6cm?

a^2 + b^2 = c^2c^2 = 8^2 + 6^2c^2 = 64 + 36c^2 = 100c=10
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Answered by Lucy O. • Maths tutor
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Describe the structures of proteins.

Proteins are made up of the primary structure, secondary structure and tertiary structure. Some proteins may also have a quaternary structure. The primary structure is the specific sequence of amino acids, p...
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Answered by Lucy O. • Biology tutor
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Integrate using by parts twice : ∫e^(x)*(cos(x))dx

By putting u=cosx and v’= e^x , use the by parts formula to get:∫e^(x) (cos(x)) dx = cos(x)e^x - ∫-(e^x)sin(x) dx. Use by parts again on the second term to get ∫ =cos(x)e^x + sin(x)e^x - ∫e^(x) (cos(x))dx. T...
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Answered by Isma Z. • Maths tutor
7259 Views

How far did the lives of black americans change 1930-2000?

The lives of black Americans changed to a great extent in the period mentioned. In the eyes of the law, their lives saw many positive changes. At the beginning of the period, the laws known as 'Jim Crow' wer...
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Answered by Jacob H. • History tutor
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