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Suppose a mixture of oxygen and nitrogen is prepared in which there are 0.200 mol oxygen and 0.500 mol nitrogen. a) What are the mole fractions of the gases? b)If the total pressure of the mixture is 745 torr, what are the partial pressures of the two gases in the mixture? The answer should have correct number of significant figures. Show work.
A 347 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 630. mmHg. Calculate the moles of Ar present.
What are the partial pressures of N2 and H2O. (NH4)2Cr2O7(s) ? N2(g) + 4 H2O(g) + Cr2O3(s) I answered .066 atm
A 2.9 m solution of methanol (CH3OH) in water has a density of 0.984 g/ml. What are the a) mass percent, b) molarity, and c) mole fraction of methanol in this solution?
Mixtures of ethanal and water do not behave Raoult' s law. Describe the deviation from Raoult' s law in words and with a graph.
Calculate the amount of water in liters that would have to be vaporized at 40 C (approximately body temperature) to expend the 2.5 x 10^6 calories of heat generated by a person in one day (commonly called sweating).
Burning a straight chain alkane in oxygen gas yields a reaction: CnH(2n+2) + aO2 = bCO2 + cH2O determine the factor "a" as a function of "n" for equations where n is equal to or greater than 1.
Is the ethoxide anion considered a strong base in elimination and substitution reactions. Could you please explain your answer
Calculate the molality of a 20.0 per cent by weight aqueous solution of NH4Cl. (Molecular weight: NH4Cl = 53.5) (b) If this NH4Cl solution is assumed to be ideal and is completely dissociated into ions
when sulfur dioxide, an air pollutant from the burning of sulfur-containing coal or oil, dissolves in water, an acidic solution is formed that can be viewed as containing sulfurous acid, H2SO3. H2O + SO2(g) HsSO3(aq) Write the expression for Ka1..
a step by step answers for those Question please. Please be brief. What is the PH of a buffer prepared by combining 25mL of 0.1M nitrous acid with 25mL of 0.1M sodium nitrite?
M+ is added to a solution of 0.0035 M X- and 0.0016 M Z-. MX has Ksp = 8.2 × 10^-9, while MZ has Ksp = 1.7 × 10^-10. What percentage of the Z- is still in solution (not precipitated) when the MX just starts to precipitate? Answer in units of %.
calculate the number of excess reagent units remaining when 100 C4H10 molecules and 611 O2 molecules react?
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