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An oxide of osmium (symbol Os) is a pale yellow solid. If 2.68 g of the compound contains 2.01 g of osmium, what is its empirical formula? (Type your answer using the format CO2 for CO2.)
What is the molarity of a solution made by dissolving .34 moles of NaCl in 455 mL of water?
Compare the percent ionization of the base in (a) with the percent ionization of the base in (b).
What is the minimum mass of each reactant necessary to produce 200 g of sulfuric acid in nthe following reaction?
0.75g of hydrogen chloride is dissolved in water to make 2.5L of solution. What is the pH of the resulting hydrochloric acid solution.
explain why water is not plotted on the delta t versus molecular mass graph in the analysis .(hint:what makes water different from the other 3 solvents?
The calorimeter contains 1.00 kg of water (heat capacity of H2O = 4.184 J/g°C) and the heat capacity of the empty calorimeter is 0.10 kJ/°C. How much heat is released per gram of oil shale when it is burned?
one cup is equivalent to 237 cm^3. In 1 cup of oil has a mass of 216 g. What is the density of olive oil in g/cm^3
observed that 7.48 mmol of baf2 will dissolve in 1.0L of water. use these data to calculate the value of Ksp for barium fluoride
Treatment of (S)-( )-5-methyl-2-cyclohexenone with lithium dimethylcuprate gives, after protonolysis, a good yield of a mixture containing mostly a dextrorotatory ketone A and a trace of an optically inactive isomer B
Osmium has a density of 22.6 g/cm3. What volume would be occupied by a 21.8 g sample of osmium?
At 9.°C and 1.40 atm pressure, a sample of helium gas occupies a volume of 5.10 L. The sample is compressed and heated to 60.°C. Calculate the final pressure of the sample, if the final volume is 3.64 L.
Which proton(s) in 1-phenylethanol corresponds to the tall singlet at about 7.40 ppm in the 1H NMR?
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