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from the equation C2H5OH + 3O2 --> 2CO2 + 3H2O, how many mols of ethanol are needed to use up 3.24 mols of oxygen?
A mixture of 3.50 moles of B and 5.25 moles of C in a 20.0 L container is allowed to come to equalibrium. What is the equalibrium concentration of A?
Calculate the ratio of dihydrogen phosphate to hydrogen phosphate in the blood at pH 7.4. The Ka = 6.3 x 10 -8 5. 2.
Gaseous hydrogen has a density of 0.0899g/L at 0 degrees Celsius. How many liters would you need if you wanted 1.0078 g of hydrogen?
If 1.00 g of an unknown molecular compound contains 8.35 x1021 molecules, what is its molar mass
Bismuth oxide reacts with carbon to form bismuth metal: Bi2O3(s) + 3C(s) --> 2Bi(s) + 3CO(g)
Using Henry's law, calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20 ^ C and an atmospheric pressure of 665 torr. The partial pressure of O2 is .21 atm.
Calculate the mass of Sodium Nitrate required to prepare 50cm3 of 0.2 moll-1 solution
How much energy is required to evaporate 100.0 grams of water that is at 100.0 degrees Celsius?
If a bottle of nail polish remover contains 151 g of acetone, how much heat would be released by its complete combustion?
liquid NCl3 in a 2.50L closed container is heated until it decomposes completely to gaseous products. the resulting mixture exerts a pressure of 745mm Hg at 95 degrees celsius
Calculate the enthalpy of the reaction: 2NO(g) + O2(g) --> 2NO2(g) given the following reactions and enthalpies of formation:
In a titration experiment, a 12.5 mL sample of 0.0500 M KOH neutralized 14.7 mL of HNO3 solution. Calculate the molarity of the HNO3 solution.
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