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11111nata11111 [884]
4 years ago
7

Calculate the moles of sucrose in a 15.0-g sample of the substance

Chemistry
1 answer:
dalvyx [7]4 years ago
3 0
15.0 g/342.2965= .0438 mol
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When water is turned into water vapor is a ______ change.<br><br> Chemical or physical?
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who is known as the "Father of Medicine." A. Galen B. Aristotle C. Galileo D. Hippocrates
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D. Hippocrates

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You are in charge of inflating balloons for a parade. When you inflate the balloons in the morning, It will be 15 degrees Celsiu
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Question 4 of 10
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Water (2850 g ) is heated until it just begins to boil. If the water absorbs 5.53×105 j of heat in the process, what was the ini
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<em>Explanation;</em>

We can simply use heat equation

Q = mcΔT  

 Where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).

Let's assume that the initial temperature is T.

Q = 5.53 × 10⁵ J

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(100 - T)  °C = 5.53 × 10⁵ J  / (2850 g  x 4.186 J/g °C  )

(100 - T)  °C = 46.35 °C

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                   ≈ 54 °C

7 0
4 years ago
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