Please somone help me with a chemistry question brainliest to whoever answers correctly and 20 points

If you add 10ml of hot water to 10ml of cold water and the change in tempature 8°c calculate how much energy is gained by the cold water

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule