What mass of water would need to evaporate
What mass of water would need to evaporate from your skin in order to dissipate 1.7 × 105 J of heat from your body? H2O(l) → H2O(g) ΔHvap = 40.7 kJ/mol
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How would you distinguish between methyl benzoate and phenylacetic acid using 1H NMR spectroscopy?
The specific heat of compound A is 0.50 cal/g °C. What amount of heat has been added to 100.0 g of compound A if the temperature changes by 5.0°C?
Suppose that in changing samples, a portion of the water in the calorimeter weere lost. In what way, if any, would this change the heat capacity of the calorimeter?
What polymer is made from the monomer vinylidene chloride?What additional polymer is made from this alkene: Isobutylene ?
A saturated solution contains 167 g AgClO4 in 30 ml of water in 25 C. What is the solubility in g solute/(100 g H20)? Calculate the mole fraction of solute at this temperature.
To prepare 5.0 L of a 3.50 M solution of Potassium Hydroxide (KOH), how many grams of Potassium Hydroxide must be used?
What is the electron configuration of Al following 2p ionisation? Use a table of microstates to derive the states arising from this configuration. Predict the lowest energy 2p-1 level of Al+. Explain your reasoning.
A volume of 80.0 ml of H2O is initially at room temperature (22.0 C). A chilled steel rod at 2.00 C is placed in the water. If the final temperature of the system is 21.1 C , what is the mass of the steel bar?
the molar heat of vaporization at 298 K for diethyl ether is 26.0 kj/mol. How much heat would be requiered to vaporize 0.714 g of ether at 289 K?
A sample of oxygen that occupies 2.5 × 10-6 mL at 508 mm Hg is subjected to a pressure of 1.2 atm. What will the final volume of the sample be if the temperature is held constant?
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It is true there are more voters in the northern part of the state. But that shouldn't allow the north to dictate to the south.