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A sample of compound weighing 83.5 g contains 33.4 g of sulfur. The rest is of oxygen. What is the empirical formula?
If a heating mantle doesn't plug straight into the outlet on the bench or wall, thus what piece of equipment must for all time be utilized in combination with a heating mantle
the combustion of ethane produces carbon dioxide and steam2c2h6 7o2 --- 4co2 6h20how many moles of co2 are produces
what is the molar concentration of phosphate ion in a 2.5 m aqueous solution of phosphoric acid
a new temperature scale is proposed based on the melting andboiling point of benzene. the melting point os benzeneis
The aptitude of a frustrated Lewis pairs to capture NO nitric oxide to produce aminoxyl radicals is a recent triumph of FLP chemistry, where Mes is 1,3,5-trimethylphenyl.
Compounds are always composed of two or more elements. Atoms of different elements are different. Isotopes have the same number of protons but a different number of neutrons.
A solution is prepared by dissolving 16.2 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.50 mL sample of this stock solution is added to 59.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
A solution is prepared by adding 80.0 mL of 0.090 M HBr to 130.0 mL of 0.50 M HI. Calculate the concentrations of all species in this solution. HBr and HI are both considered strong acids.
Draw a heating curve (qualitative) starting with ice at -20 degrees C going to steam at 200 degrees C. Indicate the solid, liquid, and gas states, and the melting and boiling points.
These are characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) (1a) The initial pH : (1b) The volume of HI(aq) required to reach the equivalence point
As of the writing of this text, EPA standards limit atmospheric ozone levels in urban environments to 84ppb. How many moles of ozone would there be in the air above Los Angeles County.
Balance the following redox reaction that occurs in a acidic solution using the half reaction method. Show work Pb(s) + PbO2(s) + H2SO4(aq) ---> PbSO4(s)
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