Explanation:
When diluting a fruit juice, it is important to know the final volume so as not to over dilute the solution.
- The fruit juice can become too diluted if we don't know the final volume .
- Concentration refers to the amount of solute dissolved in a solvent.
- To achieve a desired amount of concentration during dilution, the volume of the target must be known.
- This will serve as a guide of the amount of solvent to add in order to take the solution to the desired volume.
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Answer:
there is no change at all!!!
Answer:
Solution of isopropanol is 10.25 molal
Explanation:
615 g of isopropanol (C3H7OH) per liter
We gave the information that 615 g of solute (isopropanol) are contained in 1L of water. We need to find out the mass of solvent, so we use density.
Density of water 1g/mL → Density = Mass of water / 1000 mL of water
Notice we converted the L to mL
Mass of water = 1000 g (which is the same to say 1kg)
Molality are the moles of solute in 1kg of solvent, so let's convert the moles of isopropanol → 615 g . 1mol / 60g = 10.25 moles
Molality (mol/kg) = 10.25 moles / 1kg = 10.25 m
Answer: The molarity and molality of a solution is 1.06 M and 1.11 m respectively.
Explanation:
Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.
where,
n = moles of solute =
= weight of solvent in g
10.00 g of potassium hydrogen carbonate in 100 g of solution
mass of solvent = mass of solution - mass of solute = (100.0-10.00) = 90.0 g
2. Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
where,
n= moles of solute = 0.09985
= volume of solution in ml
Density of solution = 1036.5 g/L
Volume of solution =
Answer:
Explanation:
No of molecules = 3.612*10(24)
Avogadro's number = 6.022*10(23)
no of moles = No of molecules/Avogadro's number
No of moles =3.612*10(24)/6.022*10(23)
No of moles = 6mol
