Answer: The molality of solution is 1.2 mole/kg
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 kg
Given : 10 g of glycerol is present in 100 g of solution
moles of glycerol =
mass of water (solvent )= (100-10) = 90 g = 0.09 kg
Now put all the given values in the formula of molality, we get
Therefore, the molality of solution is 1.2 mole/kg
Answer:
Generally, the first ionisation energy increases along a period. But there are some exceptions one which is not an exception
Answer is convalent . When electrons are shared, this is a convalent bond. Now if the electrons are transferred and not shared, this is an ionic bond. Ionic bonds are stronger than convalent bonds.
Answer:
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Explanation:
Answer:
C-The principal because he or she controls all the activity in the school