Reference no: EM13169485
1. How much heat is required to vaporize 26.0 g of water at 100°C?
2.How much heat is required to vaporize 76.7 g of acetone at its boiling point?
3.How much heat does your body lose when 2.9 g of sweat evaporates from your skin at 25°C? (Assume that the sweat is only water.)
4.How much heat does your body lose when 2.57 g of sweat evaporates from your skin at 25°C? (Assume that the sweat is only water.)
5.How much heat is emitted when 59.0 g of isopropyl alcohol condenses at 25°C?
6.The human body obtains 668 kJ of energy from a chocolate chip cookie. If this energy were used to vaporize water at 100°C, how many grams of water could be vaporized?
7.The human body obtains 1091 kJ from a candy bar. If this energy were used to vaporize water at 100°C, how much water in liters could be vaporized? (Assume that the density of water is 1.0 g/mL.)
8.How much heat is required to melt 43.6 g of solid diethyl ether (at its melting point)?
9.How much energy is released when 2.5 kg of diethyl ether freezes?
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Calculate the molarity and mole fraction of acetone
: Calculate the molarity and mole fraction of acetone in a 1.26 m solution of acetone (CH3COCH3) in ethanol (C2H5OH). (Density of acetone = 0.788 g/cm3; density of ethanol = 0.789 g/cm3.) Assume that the volumes of acetone and ethanol add.
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What is the delta e reaction
: When 1.025 g of naphthalene is burned in a bomb calorimeter, the temperature rises from 24.25 to 32.33 degrees celsiuc. What is the delta E reaction?
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How much per employee would the city have to invest today
: Calculate the amount needed per employee if the discount rate is not 10%, but 6%. If the workforce numbers 3,000, what is the total difference in cost between these two assumptions?
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Prepare a process cost report for the mixing department
: Prepare a process cost report for the Mixing Department for January and explain how the analysis for the Cooking Depart ment will differ from the analysis for the mixing Department
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How much heat is required to vaporize
: The human body obtains 1091 kJ from a candy bar. If this energy were used to vaporize water at 100°C, how much water in liters could be vaporized? (Assume that the density of water is 1.0 g/mL.)
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Biological-sex categories
: Gender is the socially defined set of characteristics that are assigned to a category based on one's biological sex. There are three biological-sex categories:
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How many moles of oxygen gas are needed
: How many moles of oxygen gas are needed to completely react to produce 0.94 moles of sulfur trioxide?
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Evaluate inherent risks and residual risks
: Create a Global Organizational Hierarchy for Champion Pharmaceutical, Inc. (CPI) using the information about the company provided in the Introduction to the TeamMate Practice Case
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Calculate the mole fraction for the hydrogen chloride
: 27.5 grams of hydrogen chloride is dissolved into 70.0 ml of water. Calculate the mole fraction for the hydrogen chloride that is dissolved in the water.
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