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For the reaction: N2(g) + 2 O2(g) 2 NO2(g), Kc = 8.3 × 10-10 at 25°C. What is the concentration of N2 gas at equilibrium when the concentration of NO2 is three times the concentration of O2 gas.
A 14.0-g sample of CaCl2 is dissolved in 112 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C ..
Calculate the molar mass of a vapor that has a density of 6.735 g/L at 13°C and 825 torr.
Calculate the pH of a solution prepared by dissolving 18.32 grams of benzoic acid and 43.23 grams of sodium benzoate in water sufficient to yield 1.00 L of solution.
Because Ions are more strongly attracted in an ionic compound than molecules are attracted in molecular compounds
How many grams of Cu(OH)2 will precipitate when excess KOH solution is added to 63.0 mL of 0.610 M CuSO4 solution.
Two weak acids, HA (pKa=3.0) and HB (pKa=5.0) have equal partition coefficients for extraction from water to n-octanol. an aqueous solution with equal concentrations of HA and HB is extracted with n-octanol
Calculate the pH after 0.10 mol of HCl has been added to the original solution. Assume no volume chance on addition of HCl.
what mass of ammonium chloride must be added to 2.00L of 0.450M ammonia to produce a buffer with pH=9.50 Kb=1.8E-5 for ammonia
Which of the following rtansitions in a hydrogen atom would emit radiation having the highest energy. A) n=1 to n=2 B) n=2 to n=6 C) n=6 to n=4 D) n=4 to n=1 E) n=3 to n=2 Please explain the answer to me as well.
A mysterious material was purified from safflower oil (hint: full of fatty acids). Upon ozonolysis it gave the following compounds in their respective molar ratios.
suppose the hydrate was heated too quickly and some of it was lost as it spattered out of the container . explain how this would effect .
calculate the concentration of sodium benzoate must be present in a 0.20 M solution of benzoic acid
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