A 32% by mass H2SO4(aq) solution has a density of 1.07 g/cm3
. How much solution
contains 5.37 g of H2SO4?
1. 5.01869 mL
2. 15.6834 mL
3. 2.92056 mL
4. 18386.9 mL
5. 0.934579 mL

your answer is c) plasma

~*"auba14"*~

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