What was the molarity of the sodium carbonate solution
A 447 cm3 volume of Na2CO3 solution was warmed with an excess of sulfuric acid until all action ceased. A 5.0 L volume of dry CO2 gas measured at STP was given off and collected. What was the molarity of the sodium carbonate solution?
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The concentration of carbon monoxide in an urban apartment is48 μg/m3. What mass of carbon monoxide in grams is present in a roommeasuring 9.5 * 12.5 * 20.0 ft?
At standard temperature and pressure, what volume of oxygen would be required to be required to burn 2000 g of propane? If air is 21 percent oxygen, what volume of air at STP would be required?
Aspirin is a weak acid (pKa=3.5). When it enters the body, the undissociated form of the acid can freely permeate membranes where the dissociated ions cannot.
Calculate the mean free path and the collision frequency ofcarbon dioxide molecules using the collision cross-section ofσ=0.52nm^2 at 10atm,25,50 and 100 degrees C.
If a cube with edges of 1.000 cm weighs 25.68 g, what would themass of a cube of the same material with sides 2.57 cm in length be?
A 0.355 g sample of a solid, monopractic acid having a molecular weight of 12g/mol requires 18.47 mL NaOH for neutralization. Calculate the molarity of the NaOH solution.
How many mL of 010 M NaOH should the student add to20 mL 0.10 M HFor if she wished to prepare a buffer with a pH of3.4, the same as in Problem 4?
A solid consists of a mixture of NaNO3 and Mg(NO3)2. When 6.50 g of the solid is dissolved in 50.0 g of water, the freezing point of the solution is lowered by 5.37 C. What is the composition by mass of the solid?
A 100.-L flask contains a mixture of methane, CH4, andargon at 25 degrees celcius. The mass of argon present is 228g and the mole fraction of methane in the mixture is 0.650. Calculate the total kinetic energy of the gaseous mixture.
50.0 mL of water are placed in a calorimeter. When 15.0 g of ice are added to the calorimeter, the temperature drops from 70.0 C to51.2 C. Calculate the heat of fusion of ice in kJ/g, and inkJ/mol
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