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zmey [24]
2 years ago
8

How is this type of question solved?

Chemistry
1 answer:
SIZIF [17.4K]2 years ago
5 0

The percentage purity of the sodium hydroxide will be 37.5%.

option A is correct.

<h3>What is mass percentage?</h3>

Mass percentage is the amount of solute present in per hundred gram of a solution is called Mass percentage of solution.

Mass percentage = mass of component / mass of solution × 100

mass of component = 1.20g

mass of solution = molar mass of NaOH + molar mass of HCl

                            = 40 + 36.5

                             = 76.5

substituting the value in the equation,

mass percentage = 1.20 / 76.5

                             = 37.5%

Therefore, percentage purity of the sodium hydroxide will be 37.5%.

option A is correct.

learn more about mass percentage, here:

brainly.com/question/14848802

#SPJ1

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What is the molecular formula of a compound with the empirical formula SO and molecular weight 96.13?
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3 years ago
A sample of gas originally at 25 C and 1.00 atm pressure in a 2.5 L container is allowed to expand until the pressure is 0.85 at
aivan3 [116]

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Explanation:

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The general gas equation is given as;

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where;

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V1 = initial volume

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V2 = Final volume

T2 = Final temperature

From the question,

P1 = 1.00 atm

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V1 = 2.5L

V2 = ?

from the equation, making V2 subject of formula we have;

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The correct answer option is a) collisions between the particles and surrounding molecules.

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The collisions between the particles and surrounding molecules causes the Brownian motion of particles in a colloid.

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