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Studentka2010 [4]
3 years ago
5

Molarity is defined as the 1. moles of solute per kilogram of solvent 2. moles of solute per liter of solution 3. mass of a solu

tion 4. volume of a solvent
Chemistry
2 answers:
Luba_88 [7]3 years ago
6 0
2. the moles of solute per litre of solution.
Softa [21]3 years ago
6 0

Answer:

1. Moles of solute per kilogram of solvent

Explanation:

Molality is the number of moles of solute per kilogram of solvent.

Molality (M) = moles of solute/ kilogram of solvent

S.I unit of molality (M) = mol / kg

It is usually used in calculating colligative properties of matter.

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Identify the number of moles in 369 grams of calcium hydroxide. Use the periodic table and the polyatomic ion resource.
topjm [15]

Answer : The number of moles in 369 grams of calcium hydroxide is, 4.98 moles

Explanation : Given,

Mass of calcium hydroxide = 369 g

Molar mass of calcium hydroxide = 74.093 g/mole

Formula used :

\text{Moles of calcium hydroxide}=\frac{\text{Mass of calcium hydroxide}}{\text{Molar mass of calcium hydroxide}}

Now put all the given values in this formula, we get the moles of calcium hydroxide.

\text{Moles of calcium hydroxide}=\frac{369g}{74.093g/mole}=4.98mole

Therefore, the number of moles in 369 grams of calcium hydroxide is, 4.98 moles

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