Types of Chemical Reactions 2utz
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لالها لها هاله | 2 | 1
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Luis is helping his parents paint a border around the walls of a room. He uses a stencil to repeat the same design
on each wall to form one long grapevine with a bunch of grapes every foot along its length. What type of chemical
reaction does this best model
O replacement
decomposition
polymerization
synthesis
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your answer would be “dry”

listen, you cant how young you were.

"you didn't chose the stud life. the stud life chose 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