Mass of any chemical, in chemistry, is constant, no matter what you do to it.
if q= mc delta T then we know that as the mass increases the heat transferred increases
For a given volume and pressure, the mass of the air contained in that volume (density) will decrease as the temperature increases.
at constant temperature in a closedcontainer the increase in temperature increases the volume of a gas but not the mass.
An increase in temperature usually causes an increase in volume. Since the mass doesn't change, density decreases. tt
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The mass diffusivity of a gas mixture generally increases with temperature because higher temperatures lead to increased molecular velocities and therefore enhanced diffusion rates. Pressure can also have an effect; typically, an increase in pressure reduces the mass diffusivity due to the decrease in intermolecular space available for diffusion.
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There's no reason for the mass of anything to depend on its temperature.
As temperature increases, the volume of a liquid generally expands due to increased kinetic energy of the molecules causing them to move farther apart. The mass of the liquid remains the same. Consequently, the density of the liquid decreases because density is mass divided by volume, and with volume increasing and mass remaining constant, density decreases.
Temperature increases as pressure increases.
Oh, dude, you're asking about solubility, huh? Well, the relationship between water temperature and the maximum mass of ammonium chloride that can dissolve in water is that as the temperature increases, more ammonium chloride can dissolve. It's like when you heat up soup on the stove and it dissolves faster, but with chemicals instead. So, basically, crank up the heat if you want more ammonium chloride to disappear into your water.