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26 Nov 2019

during a strenuous workout an athlete generates 2050.0 kJ of heatenergy. What mass of water would have to evaporate from theathletes skin to dissipate this much heat?

note at 100 celsius the molar heat of vaporization of water is40.67 kJ/mol at 25 celsius room temp the molar heat of vaporizationif water is 44.0 kJ/mol

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Reid Wolff
Reid WolffLv2
7 Feb 2019

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Related questions

Suppose that 0.88g of water condenses on a 75.0-g block of iron that is initially at 22 degrees Celsius. If the heat released during condensation goes only to warming the block, what is the final temperature (in degrees Celsius) of the iron block? Assume a constant enthalpy of vaporization for water of 44.0 kJ/mol.

(1) Chapter 12 Question 2 - Algorithmic

Part A

How many kJ of heat are needed to completely vaporize 43.2 g of H2O? The heat of vaporization for water at the boiling point is 40.6 kJ/mole.

How many kJ of heat are needed to completely vaporize 43.2 g of H2O? The heat of vaporization for water at the boiling point is 40.6 kJ/mole.

a. 97.4
b. 2.26
c.16.9
d. 43.2
e. none of the above

(2) Chapter 12 Question 3 - Algorithmic

Part A

A 250 gram sample of water at the boiling point had 24.0 kJ of heat added. How many grams of water were vaporized? Heat of vaporization for water is 40.6 kJ/mole.

A 250 gram sample of water at the boiling point had 24.0 kJ of heat added. How many grams of water were vaporized? Heat of vaporization for water is 40.6 kJ/mole.

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Chapter 12 Question 21 - True/False

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Water has a heat of vaporization of 44.0 kJ/mol while the chemical diethyl ether has a heat of vaporization of 27.1 kJ/mol. This shows that one mole of water would vaporize more easily than would one mole of diethyl ether.

Water has a heat of vaporization of 44.0 kJ/mol while the chemical diethyl ether has a heat of vaporization of 27.1 kJ/mol. This shows that one mole of water would vaporize more easily than would one mole of diethyl ether.

True
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Exercise 11.97

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Exercise 11.79

A gas mixture contains 74% nitrogen and 26% oxygen.

Part A

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Express your answers using TWO significant figures. Enter your answers numerically separated by a comma.
PN2, PO2 = ?????? atm

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