How much heat is absorbed by a 2000 kg granite boulder as energy from the sun causes its temperature to change from 6°c to 25°c?

= 30,020 kilo Joules

Explanation:

Heat absorbed is calculated using the formula;

Q = m× c×ΔT

where, Q is the amount of heat absorbed in Joules,

m is the mass of the substance

c is the specific heat capacity of the substance

ΔT is the change in temperature, (25°C - 6°c) = 19°C

Specific heat capacity of granite is 790 J/kg/K

Therefore;

Heat absorbed = 2000 kg × 19 × 790 j/Kg/K

                         = 30,020 kilo Joules

the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products

the answer for sodium is 0.186

the answer for rubidium is 0.251