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What is the empirical formula for an prganic compound whose percentage composition is 40.0% carbon and 6.7% hydrogen?
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 72% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 multiplied by 10-12.]
A 352-mL container of nitrogen is held at a pressure of 791 mm Hg. What volume container would be lowered to 649 mm Hg?
At a total air pressure of 2.78 and a temperature of 25.0 , what is the solubility of in a diver's blood? [Use the value of the Henry's law constant calculated in Part A]
consider the reaction of 215ml 2.15M nitric acid with 26.0 g of solid iron(2) carbonate for the following questions 1. write the balanced chemical equation for this reaction 2. which reactant is the limiting reactnat?
moles of an ideal gas in an initial state T1 = 300 K and P1 = 0.5 bar undergo an isothermal compression until the pressure of the system is four times the original pressure
A mixture of gases contains 0.26 mole CH4, 0.38 mole C2H6, and 0.18 mole C3H8. The total pressure is 1.50 atm. Calculate the partial pressures of the gases.
effuses through a hole in a plate in the same amount of time it takes 20.54 mL of another gas to effuse through the same hole under the same temperature and pressure conditions. Determine the molar mass of the unknown gas.
what is the speed of a proton in a linear accelerator has a de Broglie wavelength of 159 rm pm
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
What is the molecular formula of the compound 2,3-dimethyl-4-cyclopentyl-5-ethyldecane?
Using the balanced equation of BaCl2 + 2AgNO3 => 2AgCl + Ba(NO3)2, answer the following questions: What mass of AgNO3, in grams, is required for complete reaction with 0.156 g of BaCl2? What mass of AgCl is produced?
The Milikan experiment is important because it determined the of an . Using Thomson's and Milikan's the of an was determined. Rutherford's experiment is important because it clearly demonstrated that the is mostly
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