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iris [78.8K]
2 years ago
11

NEED HELP!

Chemistry
1 answer:
masha68 [24]2 years ago
7 0

Answer:

28.9

Explanation:

4.5+24.4

= 28.9

Mark me as a brainlist.I hope this helps you.

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Elements x and y form 2 binary compounds. In the first 14.0 g of x combines with 3.0 g of y. In the second, 7.00 g of x combine
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second compound

Let molar mass of x is = X

Let molar mass of y is = Y

Moles of x in second compound = Mass / molar mass = 7 / X

Moles of y in second compound = Mass / molar mass = 4.5 / Y

For second compound  

7 / X : 4.5/ Y = 1:1

Therefore

X / Y = 7/4.5

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The mass of x in first compound = 14g

moles of x in first compound = 14/X

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