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A 890 mL sample of NO2 gas is at STP. If the volume changes to 644 mL and the temperature changes to 20ºC, what will be the new pressure in atmospheres?
If the partial pressures of N2, O2 and NO at equilibrium are 1.5 atm, 2.5 atm and 0.75 atm respectively, what is the equilbrium constants
A solution is made by dissolving 5.00 g of iodine in 100 mL of methanol (density = 0.791 g/mL) to form a solution. What is the mass percent solute in the solution.
How many kilograms of CO2 are produced from the complete combustion of 1.00L of gasoline assume that the gasoline has the formula C8H18.
Find out What mass of the NaHCO3 reacts with the vitamin C When the tablet dissolves in H2O, it "fizzes" because the reason for this is the CHO3 reacts with the citric acid(C6H8O7 a weak organic acid) and the vitamin C?
When the equation above is balanced and all coefficients are reduced to their lowest whole-number terms, the coefficient for O2
what is the molecular formula and empirical formula of NH2Cl, molar mass = 51.5 g/mol
A solution of 0.2113 g of water dissolves in 25.0 g of a solvent which freezes at 11.5 EC below the freezing point for the pure solvent. What is the Kf value for this solvent?
what volume will a 300.0 mL sample of gas at STP occupy when the pressure is doubled at constant temperature
If 37.3 g of CO2 is produced in the reaction of C2H2 with O2 to form CO2 and H2O, how many grams of H2O are produced in this reaction.
The valence shell of the element X contains 2 electrons in a 5s subshell. Below that shell, element X has a partially filled 4d subshell. What type of element is X?
The following data were obtained for the determination of iron in serum by a spectrophotometeic method. Assuming the validity of Beer's Law for the experiment calcualte the concentration of iron in serum
Calculate the molar mass of the unknown gas. (remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0L
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