Question 8 1 pts
Which of the following statements is not true of the Pre-Raphaelite Brotherhood?
They felt that the followers of Raphael had moved painting in the wrong direction.
They believed that modern painters were more talented than those prior to Raphael.
O Much of their subject matter was spiritual and religious, revolting against immorality.
They vowed to return to some earlier medieval styles, including those of Giotto.

i believe it is a.) released into

explanation:

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