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Nonamiya [84]
3 years ago
13

2. Which one is the modal class?

Chemistry
1 answer:
Sonja [21]3 years ago
7 0

Answer:

a.3-5 is the modal class.

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In which direction does the wind blow from during a sea breeze
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Sea breeze moves from the areas of higher pressure on the water in the direction of the areas of lower pressure on land.

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You are required to prepare 500 ml of a 6.00 M solution of HNO3 from a stock solution of 12.0 M. Describe in detail how you woul
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Answer: 250 ml of stock solution with molarity of 12.0 M is measured using a pipette and 250 ml of water is added to volumetric flask of 500 ml to make the final volume of 500 ml.

Explanation:

According to the dilution law,

C_1V_1=C_2V_2

where,

C_1 = concentration of stock solution = 12.0 M

V_1 = volume of stock solution = ?

C_2 = concentration of diluted solution= 6.00 M

V_2 = volume of diluted acid solution = 500 ml

Putting in the values we get:

12.0\times V_1=6.00\times 500

V_1=250ml

Thus 250 ml of stock solution with molarity of 12.0 M is measured using a pipette and 250 ml of water is added to volumetric flask of 500 ml to make the final volume of 500 ml.

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How many electrons are in an atom of elemental sodium?
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