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What volume, in liters, of hydrogen gas measured at STP can be produced from 50mL of 6.0 M hydrpbromic acid and ac excess of zinc metal, according to the following reaction: 2HBr(aq)+Zn(s) -> ZnBr2 (aq)+H2(g)
octane has a density of 0.692 gml at 20 degrees celcius. how many grams of o2 are required to burn 1.50 gal of
Assuming the reduced mass associated with the stretch equals the mass of the hydrogen atom, preduct the frequency of the C-D stretch of CDCl3
atomic absorption spectrometer was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 10 uL of a 1000 ug/mL Cd standard was added to 10 mL of solution.
The half-life of carbon-14 is 5,730 years. If you started with 100.0 g of carbon-14, how much carbon-14 would remain after 4 half-lives.
iron was heated to 275.1 c and placed into 272 g of water at 19.8 c the temperature of the water rose to 25.6 c.
determine the molarity of the solution if 3.00 grams of ammonium sulfate is dissolved in enough h2o to form 300. ml of
What is the final concentration of the solution made by diluting 4.0 mL of 0.0025M Fe(NO3)3 to a final volume of 10.0 mL
What advantages exist when using the balloons to model molecular shapes? what advantages exist when using the model kit to model molecular shapes
Will the concentration of Ni2+ increase or decrease as the cell operatres? c. What is the initial concentration of Ag+ in the cell?
A calorimeter contains 17.0 of water at 12.5 degrees celsius . When 2.10 of (a substance with a molar mass of 80.0 g/mol) is added, it dissolves via the reaction and the temperature of the solution increases to 28.5 degrees. Calculate the enthalpy..
Calculate the change in pH when 9.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
A gas mixture is made by combining 7.9 g each of Ar and Ne and an unknown diatomic gas. At STP the mixture occupies a volume of 18.73 L.
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