Answer:
The answer to your question is: The first option is correct.
Explanation:
From the data given, we conclude that as the amount of salt increases, the boiling point of water increases.
Options
If salt is added to water, the water will boil at a higher temperature This is the hypothesis for the experiment.
Salt makes water boil. This statement is not true.
If water is boiling, it must have salt added to it. This statement is incorrect, it is not the goal of the experiment.
If salt is added to water, the water will get cloudy There is not evidence of that from the information given.
To get the molarity you need to follow this equation
moles of solute
Molarity (M = -----------------------
Liters of solution
But before you apply that equation you need to find the moles of solute and the liters of solution. Follow this equation
Na2SO4 + BaCl2 = BaSO4 + 2 NaCl
Solution
Moles of BaSO4 = 5.28 g
---------------
233.43 g / mol
= 0.0226 moles
Moles of NaSO4 = 0.0226
0.0226 mole
Molarity = -----------------
0.250 L
= 0.0905 mol / L
So the answer is 0.0905 mol / L
Answer:
molality = 0.564 m
Explanation:
Molality = number of moles of solute / kg of solvent
1- getting moles of solute:
number of moles = mass / molar mass
we have:
mass = 373.5 g
molar mass = 331.2 g/mol
Therefore:
number of moles = 373.5 / 331.2 = 1.128 moles
2- getting kg of solvent:
mass in kg = mass in grams * 10⁻³
mass in kg = 2 * 10³ * 10⁻³
mass in kg = 2 kg
3- getting molality:
Molality = number of moles of solute / kg of solvent
Molality = 1.128 / 2
Molalty = 0.564 m
Hope this helps :)
Answer:
Explanation:
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Distilled water has the a neutral ph. Pure water always has a ph of 7.
