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How many miles of F are there in 0.570 moles of C3H2F6 ?

There are 3.42 moles of F in 0.570 moles of C₃H₂F₆

Given

0.570 moles of C₃H₂F₆

Required

moles of F

Solution

The chemical formula of a compound shows the mole ratio of the constituent elements

In the compound C₃H₂F₆, the mole ratio of the elements is:

C: H: F = 3: 2: 6

So in 1 mol of C₃H₂F₆, there are 3 moles of C, 2 moles of H and 6 moles of F

And for 0.570 mol of C₃H₂F₆ :

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol