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Usimov [2.4K]
2 years ago
8

Calculate the pH if the pOH = 7.4 Round your answer to two decimal places.

Chemistry
2 answers:
il63 [147K]2 years ago
6 0
POH and pH add to 14.

Therefore 14 - pOH will give you the answer.

14 - 7.4 = 6.6

The pH is 6.6
creativ13 [48]2 years ago
4 0

i need points

Explanation:

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2. How many grams of NaCl are required to prepare 0.40 L of a 0.75 M solution?
Yuri [45]

The mass of a NaCl solution that is required to prepare 0.40 L of a 0.75 M solution is 17.55g. Details about mass can be found below.

<h3>How to calculate mass?</h3>

The mass of a substance can be calculated by multiplying the number of moles by its molar mass.

However, the number of moles of a solution must be initially calculated by using the following formula:

molarity = no of moles ÷ volume

no of moles = 0.75 × 0.40

no of moles = 0.3 moles

mass of NaCl = 0.3 × 58.5 = 17.55g

Therefore, the mass of a NaCl solution that is required to prepare 0.40 L of a 0.75 M solution is 17.55g.

Learn more about mass at: brainly.com/question/19694949

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