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What is the molarity of an unknown gas that weighs 0.110 g in a 63.5mL container at 752 torr and 23 C
If the total mass of H2O produced is 22.0 grams, what was the approximate mass of the methane in the original mixture?
calculate the stoichiometric air-fuel ratio of a fuel blend containing 80 vol.% ethanol and 20 vol.% gasoline
Calculate the enthalpy change in kJ when 21.6g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H=-1036kJ/mol
The energy change, ?H, associated with the following reaction is +81 kJ. NBr3(g) + 3 H2O(g) → 3 HOBr(g) + NH3(g) What is the expected energy change
Calculate (a) the volume occupied by 8.2 mmol of the gas under these conditions and (b)an approximate value of the second virial coefficient B at 300 K.
The Cl2 removed occupies a 10.0 L container at .500 atm at 25C. How many g of Ne are present in the original container?
What is the numerical value of the rate constant and what are the units? D) Calculate the rate of this reaction when the initial concentrations of OCl- and I- are 7.6 x10-3 M and 9.6 x 10-3M respectively.
Gastric juice is made up of substances secreted from parietal cells, chief cells, and mucous-secretig cells. The cells secrete HCl, proteolytic enzyme zymogens, mucin, and intrinsic factor. The pH of gastric juice is acidic, between 1-3.
Calculate the heat required to convert 25.0 g of C2Cl3F3 from a liquid at 5.00 degress celsius to a gas at 82.00 degrees celsius.
What is the area of the circuit element in ? Write your answer in scientific notation. Round your answer to significant digits.
Using a sample of 0.0355 gram of an unknown molecular compound is dissolved in 1.000 g of liquid camphor at 200.0°C. Calculate the molar mass of the unknown compound if the camphor freezes at 157.7°C upon cooling.
If the absorbance of a sample of Diet Dr. Pepper is 0.215 at 214nm, what percentage of the 214nm radiation falling on the sample passes through it?
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