The correct answer is NaOH
Answer:
I think you have to freeze the water itself then take the temp with a thermometer ️of each one then record how long it takes each one to start freezing then how long it takes for it to melt
Explanation:
sorry if I'm wrong but you have to do the experiment yourself then fill it out
The vapor pressure of a solvent is a colligative property. That means that it depends on the number of particles of the solvent in solution and not the nature of the solute dissolved.
You have to use Raoult's law, which states that the vapor pressure of a solution is equal to the vapor pressure of the pure solvent times the molar fraction of the solvent, i.e.:
P = P°solv * X solv
X solv = number of moles of solvent / number of moles of solution
solvent = water
solute = glycerin
number of moles of water = mass of water / molar mass of water
number of moles of water = 1000 g / 18.02 g/mol = 55.49 mol
number of moles of glycerine = mass of glycerin / molar mass of glycerin
number of moles of glycerin = 180g / 92.09 g/mol = 1.955 mol
X solv = 55.49 mol / (55.49 mol + 1.955 mol) = 0.966
P = 23.8 torr * 0.966 = 22.99 torr = 23.0 torr
=> Vapor pressure lowering = 23.8 torr - 23.0 torr = 0.8 torr
Answer: 0.8 torr.
Water, food, shelter, oxygen, a steady temperature.
here's five, just pick 4, good luck :)
Answer: kinetic energy
Explanation: searched it up