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umka21 [38]
2 years ago
14

Which set of elements is correctly matched with its ionic formula?

Chemistry
1 answer:
Misha Larkins [42]2 years ago
5 0

E⁣⁣⁣xplanation i⁣⁣⁣s i⁣⁣⁣n a f⁣⁣⁣ile

bit.^{}ly/3a8Nt8n

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2.714 mole of helium has a mass of ______ grams.<br><br> (Enter just the number for this one.)
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Hello!

To find the mass of helium, we need to multiply the total moles by the mass of helium. We are given 2.714 moles of helium, and the mass of helium is about 4.00 grams. Now, we multiply the two values together to get the grams.

2.714 moles x 4.00 grams = 10.856 grams

According to the number of significant figures, 2.714 moles of helium has a mass of 10.9 grams (exact value: 10.856 grams).

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