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25cm3 of NaOH (2M) were titrated with 1.25M H2SO4. Write down the balanced reaction equation. Calculate the number of moles of NaOH used in the titration and hence deduce the volume of sulfuric acid used in the titration. Give your answer in dm3.

2NaOH + H2SO4 -> 2H2O + Na2SO4. moles = concentration x volume. #moles NaOH = 2M x (25/1000)dm3 = 0.05 mol. The reaction equations shows the ratio of alkali to acid is 2:1. The number of moles of H2SO4 re...
TW
Answered by Tiffany W. • Chemistry tutor
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How to use properly conjunctions in a French essay?

In French we have two types of conjunctions. The coordination conjunctions link words or groups of words together using words such as: mais, où, et, donc, or, ni, car. They show union, consequences, conclusi...
RM
Answered by Roxane M. • French tutor
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Solve the following definite integral from x=2 to x=-1: ((x^4) + 3(x^2) + 2) dx

GENERAL PROCEDURE -- To solve this equation you can separate and integrate each term on its own and then add each integral together. To find the definite answer: Substitute "x=2" into the integrate...
HW
Answered by Harriet W. • Maths tutor
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In a Christmas Carol compare one way Dickens presents Scrooge at the start of the novel to the way he presents him at the end of the novel?

At the end of the novel Dicken's uses verbs such as 'frisked'. In contrast, at the end of the start of the novel Dicken's uses verbs such as 'squeezing' 'wrenching' and 'grasping'. The change in Scrooge's ch...
KB
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balance this equation C8H18 + O2 ---> CO2 + H2O

First split the equation in half. write down the number of each element there is on either side and then see how many more of that atom you need. make sure that there is the same number of carbons oxygens an...
MC
Answered by Meherun C. • Chemistry tutor
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