Bruce Lee's famous one-inch punch is a technique he taught many of his students. This punch is able to produce 681 N of force in a very short amount of time. Assuming Bruce Lee had rectangular fists measuring 0.0889m in length and 0.0508m in width, F how much pressure was produced by this punch?
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3 1/4 %

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

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