Which two elements, in looking at their atoms, have a total of 51 protons between them? Question 1 options:

Magnesium and Aluminum

Lithium and Scandium

Tin and Hydrogen

both A and B

m = 1 gram

Explanation:

Given that,

Heat, Q = 84 J

The temperature increases from 10°C to 30°C.

We need to find maximum number of grams of liquid water. We know that the heat required is given by :

c is specific heat of water, c = 4,200 J/kg°C

Use the above formula to find m. So,

or

m = 1 gram

So, the required mass is 1 gram.