If the distances are all equal, then it's all a matter of the product

of the two masses. So we have to find the pair with the greatest

product of their masses.

It seems like that would be a person and the Earth. ( B. )

**Answer: a compound is a substance that is made up of more than one type of atoms bonded together, mixtures are a mix of multiple elements or compounds which haven't bonded together. **

**Explanation:**

Consider a hypothetical reaction:

A ↔ B

The change in free energy, ΔG can be related to the equilibrium constant K as:

**ΔG = -RT ln K**

**i.e. K = exp (-ΔG/RT) **

When ΔG is negative, the exponential becomes positive which results in a high value of the equilibrium constant (K). More and more of the reactants get converted into products and the reaction tends to be spontaneous.

**Answer:**

The amount of heat gained by the water in cup 2 after adding the hot object(s) to it is 2119.121 Joules

**Explanation:**

As we know

Amount of heat gained

Q = mc (T2-T1)

Here,

mass of water in cup 2 (m) = 79.10 grams

Temperature of water in cup 2 = 16.8 degree Celsius

Specific heat of water (c) = 4.186 J/(g °C)

Final Temperature of water in cup 2 = 23.2 degree Celsius

Substituting the given values, we get -

Q = 79.10 * 4.186 * (23.2 -16.8) = 2119.121 Joules

The amount of heat gained by the water in cup 2 after adding the hot object(s) to it is 2119.121 Joules