Q6: A.3 kg piece of metal at 81°C is placed in 2 kg of
water at 50°C. The final temperature after
equilibrium was 53°C. What is the specific heat of
this metal?

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

the dissolution of polymer can be thermodynamically described in 2 steps.