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3 years ago

How many kilograms are in 4 moles of Na2CO3?

1 answer:

6 0

First you need to find the amount of mass of Na2CO3 in one moles
(Use periodic chart)

Na= 22.99 x 2 = 45.98
C = 12.01
O = 16.00 x 4 = 64.00

Add the molar masses together to get 121.99

To find how many grams are in 4 moles, times 121.99 by 4
This gives you 487.96

But the questions asks for the answer to be in kilograms nor grams, to change into kilograms divide by 1000
This gets you the answer: 0.49 kg

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3 years ago

Write the electron configuration for O^2- ion

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Answer:

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Explanation:

The solution is in the image

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2 years ago

Read 2 more answers