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belka [17]
2 years ago
11

How much heat energy is needed to heat 158.8g of liquid water at 7.37oC?

Chemistry
1 answer:
Rashid [163]2 years ago
3 0

Answer:

I believe it's 4892,08808J

Explanation:

∆T=158,8g•4,18÷g°C•7,37°C

=4'892,08808J

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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

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Therefore

X / Y = 7/4.5

Y / X = 4.5/ 7

The mass of x in first compound = 14g

moles of x in first compound = 14/X

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moles of y in first compound = 3 / Y

14 / X : 3/ Y = 14Y / 3X = 14 X 4.5 / 3 X 7 = 3 :1

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