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jekas [21]
3 years ago
9

How would I Determine the number of moles in 3.51 x 10^23 formula units of CaCl2

Chemistry
1 answer:
Andrej [43]3 years ago
8 0

Answer:

by using this formula you will get it

Explanation:

number of mole = number of particles÷ Avogadro's number

n=3.51×10^23÷ 6.02×10^23

n = 0.58 moles

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2) 5 · (2a - 3) = 60.

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b) 10 - 15 + 15 = 60 + 15; addition.

c) 10a = 75; simplifying.

d) 10a ÷ 10 = 75 ÷ 10; commutative.

e) a = 7.5; simplifying.

3) 4 n + (7 + n) = 52.

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g) n = 9; simplifying.

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<u>Answer:</u> The volume of acid should be less than 100 mL for a solution to have acidic pH

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To calculate the volume of acid needed to neutralize, we use the equation given by neutralization reaction:

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where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HCl

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is NaOH

We are given:

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Putting values in above equation, we get:

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For a solution to be acidic in nature, the pH should be less than the volume of acid needed to neutralize.

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