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The compound past is used for actions that are completed and have no further relevance at present. For example, "J’ai fini mes devoirs."  

On the other hand, the imperfect...

2NaNH2 + N2O --> NaN3 + NaOH + NH3

Mr(NaN3) = 65   Mr(NaNH2) = 39    
n(NaN3) = 550/65 = 8.46
100% NaN3 = 550/65 x 100/95 = 8.91
n(NaNH2) = 2 x 8.91 = 17.8
m(NaNH2) = 17....

INTRODUCTION:

In Othello, ,Shakespeare keeps within the time and social constraints surronding women when creating the tragic victim, Desdemona. I agree with the statement as although one may argue...

The lock and key model only allows one type of specific substrate to form a substrate-activesite complex with each specific type of enzyme. This is due to their complementary shapes, as only one shape and...

Integration can be used to undo differentiation. So if you had an equation that was y=5x+2 and differentiated to get dy/dx=5. When you integrate it you would only get y=5x, so the +2 is lost, to make sure...