6. It was a warm, sunny day and a light breeze was blowing. E Fill in the blanks with adjectives of quality. Take these adjectives from
those given in the box below:
1. These medicines are
in taste.
2
deeds bring satisfaction to the heart.
wind was blowing at the top of the hill
3. A
4. The rest of the road was flat and
5. Her house is in a
part of the town
6. We should eat
food
7. The
prince came riding a horse,
chilly
djective
noble
shabby
healthy
smooth
handsome
ny tell
31

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