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a) Explain the relative trends in acidities of the compounds of the formula HXOn for compounds with identical central atoms, X, but differing values of n. For example, how can one explain the differences in acidities between the different HCLOn molecules?
b) Explain the relative trends in acidities for the compounds of the formula HXOn for compounds of identical n but differing central atoms X with respect to another central atom from the same column. For example, how can one explain the differences in acidity between HCLO3 and HIO3?
If a compound is 13.6% C by mass and 86.4% F by mass, what is its empirical formula. if its molar mass is 176g/mol, what is its molecular formula
What is the pH of a buffer prepared by dissolving 0.238 g of NaNO2 in 2.50 L of 1.5 x 10-3 M HNO2, Ka (HNO2) = 6.0 x 10-4?
Balance equation. What is the percent yield if 122 grams of SiO2 are made from 246 g of Cr2O3 by the following equation. Si(s) + Cr2O3(s) - - - - > SiO2(s) + Cr(l)
a sample of propane, contains 17.7 moles of carbon atoms. How many total moles of atoms does the sample contain.
The reactions occur in acidic solution. (Use the lowest possible coefficients. Omit states-of-matter in your answer.) (a) MnO4- + H2SO3 ? Mn2+ + SO42-
The partial pressure of O2 in a sample of air on a mountain top is 115 mmHg. The oxygen makes up 21% of the gas in the atmosphere. What is the total atmospheric pressure on the mountain top?
A bird is flying around the world at a rate of 8.85 ft/sec. How many days will it take to complete its journey? (circumference of earth = 24,900 miles.
A gas expands and does P-V work on the surroundings equal to 313 J. At the same time, it absorbs 135 J of heat from the surroundings. Calculate the change in energy of the gas.
Does ammonium chloride added to water produce a simple solution, does the ammounium chloride dissociate or does a chemical reaction occur resulting in a new set of compounds.
How many grams of Na3PO4 will be needed to produce 350ml of a solution that has a concentration of Na+ ions of 0.900.
The eardrum can rupture with as little as 35 kPa of pressure difference across it. What is the depth at which this pressure difference could occur
A Student dispenses 24.95 mL of a hydrochloric acid solution with an unknown concentration into an Erlenmeyer flask. The student then titrates the HCl solution with 0.168 M sodium hydroxide. If 24.33 mL of NaOH is required to reach the equivalence..
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