A. ca is the answer because its short for carbon
Answer: 3.57M
Explanation:Please see attachment for explanation
Heat energy is released to warm the house
The first diagram is showing carboxylic acid because carboxyl contains a Carbon atom as the central atom bonded with OH group, a double bonded Oxygen, hydrogen ofc, and a lone R group.
2. It is ester group
3. Correct its ether
4. It's the exact diagram for ethyl alcohol, so correct
WOOT WOOOT