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For many years drinking water has been cooled in hot climates by evaporating it from the surfaces of canvas bags or porous clay pots. How many grams of water can be cooled from 39°C to 18°C by the evaporation of 44 g of water
What is the volume occupied by one mole of helium at 0°C and 1 atm pressure?
a large containerized planting that contains 79kg of soil. An analysis shows that you need to neutral 3.27 meq/100gof acidity. How much of finely ground pure CaCO3
What pressure is exerted by 0.625-mole of a gas in a 45.4-L container at -24.0°C?
Determine the ph ( to 1 decimal place) of a slution prepered by adding 125ml of 0.759M acetic acid to 10.3g of sodium acetate. the pKa of acetic asid is in table 10.2. Assume the volume of the solution does not change?
What type of feature will be observed in the EI mass spectrum of chlorobenzene? A) A signal at 112 and a signal at 114 in a ratio of 3:1
Calculate the van't Hoff factor (i) for this solution. 2. Calculate the vapor pressure at 25 ?C of an aqueous solution that is 5.80% NaCl by mass.
Calculate the pH at the equivalence point if 25.00 mL of 0.010 M barbituric acid (HC4H3N2O3) is titrated with 0.20 M NaOH. (Ka barbituric acid = 1.0 x 10^-5).
In this exercise it was also assumed that the calorimeter was a perfect insulator and that no heat was lost to the surroundings.
What is the value of Delta S when 2.7g of CH4 is compressed from 29.0 L to 18.0 L at a constant temperature of 100 C?
In the reaction of aluminum metal and oxygen gas to make aluminum oxide, how many moles of aluminum will react with 0.80 grams O2?
What is the final state of the system when the piston has stopped and there is a balance of forces across the piston? Do not neglect the fact that during motion there may be some friction between moving parts. Consider cases in which the piston is..
picometers and a crystal of metal X has a unit-cell that is faced centered cubic. Calculate the density of Metal X(Atomic Weight = 42.3g/mol)
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