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The ratio between the molar mass of an alkene(A) and an alkyne(B) with the same number of carbon atoms is 1.05. Find the molecular formulas of the two hydrocarbons then write the reaction for how we can obtain the alkene A from the alkyne B.

We start by remembering the general formulas of alkenes and alkynes: Alkenes - C n H 2n Alkynes - C n H 2n-2 We calculate the molar mass of both of these using the fact that the atomic mass of carbon is 12 a...
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Answered by Cosmin B. • Chemistry tutor
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How can we calculate the derivative of function f(x)= (x+2)/(x-1)?

In order to calculate the derivative of the given function, we need to apply the laws of derivation. Therefore: f '(x) = ((x+2)/(x-1))' f '(x) = [(x+2)' * (x-1) - (x+2) * (x-1)' ]/ (x-1) 2 f '(x) = [ 1 * (x-...
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Answered by Cosmin B. • Maths tutor
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How can we solve a two-equation, two-unknown values?

If we have two equations that look like this: a1 * x + b1 * y = c1 and a2 * x + b2 * y = c2 where x,y are variables and a1,a2,b1,b2 are coeficients. then we solve it using the following method: We choose eit...
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Answered by Cosmin B. • Maths tutor
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How can I check if my reaction equations are correct?

The basic principle about chemical reactions is that whatever goes in one end, will undoubtedly come out the other! The simplest way to make sure your reactions are correct is to count what you have on each ...
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Answered by Alexia K. • Chemistry tutor
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How do I plan an essay for an A Level English Literature question?

Firstly and ideally, some time should go into researching and choosing critical and textual material to use in your essay. Next: choose your arguements. Some people prefer to write the body of an essay first...
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