B) A change in color occurs.
The number of atoms of each element found in one unit of
the compound:
Potassium iodide,
KI, one atom K, one atom I
Sodium sulfide, Na2S, two atoms Na, 1 atom S
Silicon Dioxide, SiO2, one atom Si, two atoms O
Carbonic acid, H2CO3, two atoms H, 3 atoms O
1) Option b: gas pressure.
This is sustainted by the kinetic molecular theory of the gases.
2) Option c: raising the temperature of the gas will increase the pressure if the volumen of the gas and the number of particles are constant.
PV = nRT
If V and n are constant, P is proportional to T, then if T increase P will increase too.
A hot metal with a low heat capacity will raise the final temperature of water more than a hot metal with high heat capacity.
<h3>Heat capacity</h3>
It is the amount of heat required to change the temperature of a substance by just a unit.
Substances that heat up quickly are said to have low heat capacities while those that take time to heat up are said to have high heat capacities.
Substances with low heat capacity also release their thermal energy quicker than those with high heat capacity.
Thus, a hot metal with low heat capacity will readily transfer its thermal energy to water than a hot metal with high heat capacity.
More on heat capacities can be found here: brainly.com/question/11194034