Answer:
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Explanation:
Answer:
2.8 m
Explanation:
Step 1: Given data
- Moles of potassium bromide (solute): 0.210 mol
- Mass of water (solvent): 0.075 kg
Step 2: Calculate the molality of the solution
Molality is a unit used to express the concentration of a solution. It is equal to the moles of solute divided by the kilograms of solvent.
m = moles of solute / kilograms of solvent
m = 0.210 mol / 0.075 kg
m = 2.8 mol/kg = 2.8 m
according to the internet it's 3
In a solution that is 90% ethyl alcohol and 10% water, the solute is 10 g and the solvent is 90 g.
given that :
The solute in the solution by mass percent = 10 %
mass percent = ( mass of solute / mass of solution ) × 100%
mass of solute in the solution is = 10 g
The solvent present in solution by mass percent = 90 %
the mass of solvent in the solution is is 90 g
Thus, In a solution that is 90% ethyl alcohol and 10% water, the solute is 10 g and the solvent is 90 g.
To learn more about solute and solvent here
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Answer:
percipitate or sedements from chemical reactions