8 CO + 17 H2 → C8H18 + 8 H2O 4 FeS + 7 O2 → 3Fe2O3 + 4 SO2

Please help me this is so important I will brain list the right one or first one.

can you list the answers so i can answer

2b2t

explanation:

2b2t

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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