Two substances, A and B, which are of equal mass but at different temperatures, come into thermal contact. The specific heat capacity of substance A is three times larger than the specific heat capacity of substance B. Part A Which statement is true of the temperature of the two substances when they reach thermal equilibrium? (Assume no heat loss other than the thermal transfer between the substances.)
A. The final temperature of both substances is closer to the initial temperature of substance A than the initial temperature of substance B.
B. The final temperature of both substances is closer to the initial temperature of substance B than the initial temperature of substance A.
C. The final temperature of both substances is exactly midway between the initial temperatures of substance A and substance B.
D. The final temperature of substance B is greater than the final temperature of substance A.

C. The final temperature of both substances is exactly midway between the initial temperatures of substance A and substance B.

Explanation:

We can assume this problem with letters.

A has an m mass and B has an m mass.

Specific heat of B, is B, and, as the excersise announced, specific heat of A is 3B.

Initial T° of A = Z

Initial T° of B = Y

Assume no heat loss other than the thermal transfer between the substances, so let's apply the calorimetry formula

m . 3B (X - Z) = m . B (X - Y)

Notice, that X will be the final temperature.

We cancel m and B, because they have the same value. We finally got

3 (X - Z) = X - Y

3X - 3Z = X - Y

2X = -Y + 3Z

So final temperature is -Y/2 + 3/2Z

It can not be, that the final temperature of both, A and B are different because they are in thermhal equilibrium

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.