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Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 8.00 moles of aluminum sulfate Al2(SO4)3 . Express the number of moles of Al, S, and O atoms numerically, separated by commas.
what is the relative error in the determination of a density for which the accepted value is 0.945 g*cm^-3 and the experimental value
At a given temperature, the equlilibruin constant for the system studied in an experiement is 1.40x10^2. Suppose 100.0 ml of 2.00 x 10^-3 M KSCN was mixed with 100.0 ml of 2.00 x 10^-3 M Fe(NO3)3
A substance has a molar mass of 60 g/mol with 40.0 percent carbon, 6.7 percent hydrogen, and 53.3 percent oxygen. What is its empirical formula?
calculate the approximate mass of KHP required to react with 40.0 mL of 0.125 M sodium hydroxide in titration.
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295k and volume of hydrogen gas collected was 35.6 mL.
A solution of 75.0 of benzene and 75.0 of toluene has a total vapor pressure of 80.9 at 303 . Another solution of 100.0 benzene and 50.0 toluene has a total vapor pressure of 93.9 at this temperature.
Nitrogen dioxide (NO2) cannot be obtained in a pure form in the gas phase because it exists as a mixture of NO2 and N2O4. At 25°C and 0.98 atm, the density of this gas mixture is 2.7 g/L.
which gas sample contains the largest number of mole?
Although the actual process also requires water, a simplified equation for rusting (rust is shown as Fe2O3) is 4Fe(s) + 3O2(g) => 2Fe2O3(s) ?Hrxn = -1.65 x 103 kJ How much heat is evolved when 0.100 kg of iron rusts
While in Europe, if you drive 117km per day, how much money would you spend on gas in one week if gas costs 1.10 per liter and your car's gas mileage is 41.0km/L ?
Using the appropriate equation from your lecture notes, how much of a 5 gram sample will be extracted from 20mL of water using 15mL of an organic solvent and the partitian coefficient is K = 0.50.(nearest hundredth)
What is the vapor pressure of a aqueous solution containing 10 %(by weight) ethylene glycol (62 g/mol) at 25°C. PH2O = 24.3 torr at 25°C.
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