Why are gamma rays not affected by a magnet as they pass over It? A. Gamma rays do not
have enough mass to be affected.
B. Gamma rays do not have the right electrical to be affected.
C. Gamma rays are composed of only energy.
D. Gamma rays move too fast for anything to affect their pathway.

B

Explanation:

I think B is the answer because Gamma rays don't go for positive or negative charges. I am not sure about this because I had to search the question too. I hope this works for you.

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