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notsponge [240]
3 years ago
14

NEED HELP DESPERATELY!!!

Chemistry
2 answers:
Yakvenalex [24]3 years ago
6 0

Answer:

The density of tube A is greater then the density of tube B having more mass inside of the smaller area.

Explanation:

stepladder [879]3 years ago
5 0

Answer:

A is denser.

Explanation:

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2 years ago
The molarity of an aqueous sodium phosphate solution is 0.650 M. What is the molality of sodium ions present in this solution? T
netineya [11]

Answer:

molality of sodium ions is 1.473 m

Explanation:

Molarity is moles of solute per litre of solution

Molality is moles of solute per kg of solvent.

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The mass of solute = moles X molar mass of sodium phosphate = 0.65X164

mass of solute = 106.6 grams

the mass of solvent = 1430 - 106.6 = 1323.4 grams = 1.3234 Kg

the molality = \frac{moles of solute}{mass of solvent in kg}=\frac{0.65}{1.323}= 0.491m

Thus molality of sodium phosphate is 0.491 m

Each sodium phosphate of molecule will give three sodium ions.

Thus molality of sodium ions = 3 X 0.491 = 1.473 m

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ad-work [718]

Answer:

Period

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