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Carbon dioxide was allowed to effuse through a small opening under constant pressure conditions. It required 683 s for 1.00 L of this gas to effuse. Calculate the effusion time of ozone (O3) under identical experimental conditions. (Remember that the faster the rate of effusion, the shorter the time required for effusion; that is, rate and time are inversely proportional.) a) The effusion time is 574 s. b) The effusion time is 713 s. c) The effusion time is 812 s. d) The effusion time is 654 s. e) The effusion time is 745 s.
If the total mass of CO2 produced is 33.5 grams, what was the approximate mass of the methane in the original mixture?
Calculate the Gibbs free energy (in kJ/mol) at 80 degrees celsius. Assuming that the change in enthalpy is negligible over this temperature range
Calculate What will be the volume of this gas sample at standard atmospheric pressure and
The equilibrium constant, Kc, for the reaction at 25 C is 170. Suppose 15.6 g of N2O4 is placed in a 5.000-L flask at 25C. N2O4 (g) ---> 2 NO2 (g) Calculate the following
A sample of chlorine, which has an average atomic mass of 35.86, consists of two isotopes with mass of 35 and 37. What is the percent (to 0.1%) abundance of the 37 isotope?
Which of the following is not the correct chemical formula for the compound named?
Write the equations that represent the first and second ionization steps for selenic acid (H2SEO4) in water.
ideal gas on a cool morning (11*C). The air is heated to 103*C. What is the volume of the air in the balloon after it is heated?
Draw the two remaining resonance structures (in any order), including nonbonding electrons and formal charges. Which is the most stable
in the electrolysis of aqueous solution of Na2SO4, what reactions occur at the anode and the cathode. explain
A 5.95-g sample of AgNO3 is reacted with BaCl2 according to the equation to give 3.21 g of AgCl. What is the percent yield of AgCl? AgNO3(aq) + BaCl2(aq) --> AgCl(s) + Ba(NO3)2(aq)
The concentration of a biomolecule inside a rod shaped prokayorate call is 0.0025M Calculate the number molecules inside the cell, which is 2.4 um long and 1.4 um in diameter.
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