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A solution at 25 °C has a hydronium ion concentration of 1.0×10-13 M.
(a) What is the hydroxide ion concentration in this solution? _____ M
(b) Is the solution acidic or basic? _______(acidic/basic)
how many grams of K2SO4 would you need to prepare 1500g of 5.0% K2SO4 (m/m) solution?
An element crystallizes in a face-centered cubic lattice. The edge of the unit cell is 392 pm, and the density of the crystal is 21.45 g/cm3. Calculate the atomic weight of the element (in g/mol)
Determine the amount of cooling required (in tons) when the outside air temperature is 100.°F and the inside temperature is maintained at 70.0°F. Size and locate the components on the automobile.
1. calculate the root square mean velocity of cl2 at 25 ordmc.2. an unknowngas effuses at a rate that is 0.462 times
the density of an aqueous ethanol solution is .789 g/mol. How many grams of ethanol should be mixed with water to make 225mL to make a 4.5% ethanol solution?
What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when 32.0 g of NH4NO2 decomposes at 25 degrees C
The following question refers to a solution that contains 1.79 M hydrofluric acid, HF (Ka = 7.2 x 10^-2) and 3.00 M hydrocyanic acid, HCN (Ka = 6.2 x 10^-10). What is the pH of this mixture of weak acids
Draw all steps in the synthesis of each of the following compounds utilizing merely the organic starting material given, plus any desirable organic/inorganic reagents. 2-bromo2-iodopropane from 1-iodopropane.
As a bromine molecule approaches perpendicular to the negatively charged pi cloud of the carbon-carbon double bond, its bonding electrons are repelled away from the bromine atom nearer the double bond
Problem- A researcher attempted this reaction with H2SO4 instead of H3PO4 and noticed a 3rd product. How did this product form from just switching the acid catalyst?
Calculate the relative amounts of 1-chloropropane and 2-chloropropane obtained by the radical chlorination of propane, using this relative rate of reactivity.
combustion of 6.51 mg of a compound gave 20.47 mg of co2 and 8.36 mg of h2o. the compound has a molecular weight of
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