3. Burns from boiling water can be severe, caused by the transfer of energy from the boiling water to the skin as the water cools to body temperature. How much heat (kJ) is transferred from the from 15.0g
of boiling water at 100.0°C as it hits the skin and cools to 37.2°C?

Q = 3937.56  J

Explanation:

Heat transferred due to change in temperature is given by :

c is the specific heat of water, c=4.18 J/g-°C

We have, m = 15 g,

So,

Hence, 3937.56  J of heat is transferred.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).