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Concentrated sulfuric acid is 98% by mass H2SO4, with the remaining mass being water. What is the molar concentration (i.e., molarity) and the molal concentration (i.e., molality)?
Hydrogen peroxide undergoes a first-order decomposition to water and O2 in aqueous solution. The rate constant at 25 °C is 7.40 * 10-4 s-1. Calculate the volume of O2 obtained from the decomposition of 1.00 mol H2O2 at 25 °C and 740 mmHg after 20...
Calculate the mass of water formed by the complete reaction of 758 g of propane (C3H8) with excess oxygen
A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
Describe two independent methods for determining the atomic mass of an element. Explain how these method are truly independent.
Relationship between refractive index and mole fraction, How can you use refractive indices to calculate weight % composition of a distillate and its residue? How can you convert the weight % composition to mole fractions?
Produce MnO2 (s) and Oxygen gas. Balance the equation for the oxidation of hydroperoxide ion to O2 (g) by permanganate ion in a basic solution.
A hypothetical molecule, X-Y, has a dipole moment of 1.90 D and a bond length of 169 pm. Calculate the percent ionic character of this molecule.
Carboxylic acids have higher than expected boiling points due to dimeric associations involving hydrogen bonding. The structure of 3-methylbutyric acid is shown below. Draw a second molecule of 3-methylbutyric acid
Describe briefly the trend in the stabilities of oxidation states within d-metal? [High and low oxidation states]
130 mL of an HCl solution with pH of 3.90 is added to 200 mL of an HNO3 solution. The resulting solution is 1.40 mL. What was the pH of the original HNO3 solution?
determine how much pv work is done if 80.0 g of c2h4 and 125 grams of hydro chloric acid are permissible to react at
an empty volumetric flask weighing 60.42 grams weighed 309.60 grams when filled with water. after emptying the water
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