Which of the following shows the correct dimensional analysis to convert 2.87 decizooms into kilozooms? "* 1 kilozoom = 1x 10' zooms: 1 decizoom
1x 10-zooms
2.87dz
1 x 102
2.87d2
1dz
1x 102
1x 10'
1 dz
1k
1
Option 2
O Option 4
12
1 x 10'
2.87d2
1x 10'
2.87d2
1
110 di
1
Idz
1*10')

a

може ли да зареждате повече информация, моля

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