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Tcecarenko [31]
3 years ago
5

This same pot of water initially started with 100ml and a temperature of 280 C. The water temperature rose to 1030 C. How much e

nergy was absorbed by the water? (Specific heat of water is 1) q=mCΔT
Chemistry
1 answer:
Harlamova29_29 [7]3 years ago
3 0

Answer:The temperature change is 80°C

Explanation:

Heat absorbed by the melting ice (Q) = mL = 312×336 = 104,832 J

∆T = Q/mC = 104,832/312×4.2 = 80°C

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mole fraction of solute = \frac{number of moles of solute}{total number of moles of solution}    -(1)

The solubility of oxygen gas = 1.0 mmol/L  (given)

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1.00 mmol\times \frac{1 mol}{1000 mmol} = 0.001 mol

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For moles of water:

1 L of water = 1000 mL of water

Since, the density of water is 1.0 g/mL.

Density = \frac{mass}{volume}

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Number of moles of water = \frac{1000 g}{18 g/mol} = 55.55 mol

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mole fraction = \frac{0.001}{55.55+0.001}

mole fraction = 1.8\times 10^{-5}

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