Does anyone wanna roleplay?~ Don't waste a answer on saying: nO thankS or that sh*, just say what you wanna in the COMMENTS. Or don't say anything at all. Bio down below! Name:Selina~Sexuality:Bisexual~Age: 15~Hobby:singing, reading, dancing, watching tv-~About me: I'm childish sometimes, i'm stubborn ->-, I have a big ego u3u, i'm kinda weird but I'm open about it uwu, i'm afraid to be on stage- ovo, I get mad sometimes ovo, I'm WAAYYY too overprotective- ahem, so im told-, i get flustered easily XX
P. S I'm a bottom ★~(◡︿◕✿) ★~(◡﹏◕✿)★~(◡‿◕✿)

yes iam bored but how do we play it

Explanation:

sorry

the answer is 75.0%.

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