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.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

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