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2 years ago

How much CrCl3 • 6H20 is needed to prepare 1 L of solution containing 20.0g Cr3+ per L?

Chemistry

1 answer:

Yuliya22 [10]2 years ago

8 0

Answer:

salt mass=102.5gCrCl3.6H2O

Explanation:

Hello !

To know how much CrCl3.6H2O we need, we follow the steps below

First we have to know what the mass of the compound is

Cr = 52g / mol

Cl = 35.5g / mol

H = 1g / mol

O = 16g / mol

We calculate the mass

52+ (35.5 * 3) + 6 * (2 * 1 + 16) = 266.5g

We have 20g Cr, so we calculate the amount of salt:

20gCr * (266.5g salt / 52gCr) = 102.5gCrCl3.6H2O

salt mass=102.5gCrCl3.6H2O

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Answer:

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Explanation:

a. When you are studying the kinetics of a reaction such as:

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Rate = k×[A]ᵃ[B]ᵇ

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2 years ago

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1. How many ATOMS of boron are present in 2.20 moles of boron trifluoride? atoms of boron.

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