3) How many micrograms are found in 9.12 x 10-5 L of Water?

86.2 or 431/5

Explanation:

hope it helps u

wait need more answer?

sure just give Brainliest and follow me

to i get ur question and answer it fast

i can good luck

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