Answer:
temperature of the water
Explanation:
Density is defied as mass divided by the volume. To investigate how the density of water change with temperature, Bob have the change the temperature and read the volume and mass of the investigated sample.
Even if there is a different salt content between booted water or tap water and have an influence on the density (compared with pure water), this difference is not so big so the change in density with temperature can be determined. Considering that the experiment do not require extreme accuracy, any type of water may be used (bottled water of tap water).
You always adjust numbers and it will be before the element
so you Neva add or change a subscript
It is an inverse relationship such that when in this case one circumstance is decreased ie the volume of the gas container then the other circumstance the gas pressure increases as opposed to being directly proportional whereby say if water is cooled enough it will turn to ice ie a cold substance.
The correct answer is B. The solute is the substance that can dissolve. So, alcohol is the solute.
Answer:
679.32 kJ
Explanation:
Heat required = number of moles * latent heat of fusion of water
So since we are given the mass of water and not the number of moles our first step is to calculate the number of moles of water available,
heat required = 111.0 mol * 6.12 kJ/mol
= 679.32 kJ