1. 이 문제 ice table로 풀어도같은값이나오는데 그렇게 풀어도되나요?

2. 이 문제에서 records the temperature of the system이라는데 그럼 table에 잇는 temp는 system의 temp 아닌가요? system temp increased so surrounding's temp decreased하니까 exotermic아닌가요?

3. frq 에서 justify/explain할 떄 얼마나 자세히 써야하나요? 기준을 잘모르겠어요

4. sigfig은 항상 맞춰야하나요? 안맞추면 감정되나요??

감사합니다