If you added 45,000 calories to water that was at 25 degrees c, and the ending temperature was 35 degrees c, how much water did you have (in l)?

4.5 L water we have in litres (L).

Explanation:

where

= Final T - Initial T

Q is the heat energy in calories

c is the specific heat capacity (for water 1.0  cal/(g℃))  

m is the mass of water

Plugging in the values  

So,

Volume of water = mass/density

=4.5 L (Answer)

a polar bond is formed when electrons are shared unevenly between atoms