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Calculate the concentrations of all species present, the pH, and the pecent dissociation of HCN (Ka=4.9e-10) in a solution that is 0.025 M HCN and 0.010 M in NaCN
Calculate the molar mass (g/mol) of a gas whose root mean square speed is 796 m/s at 512 K.
The procedure (paragraphs 2 and 3) states that the additions of bromobenzene, methyl benzoate and hydrochloric acid must be done slowly.
Draw the Lewis structure of nitramide with a single bond between the two nitrogen atoms and include formal charges. Are there any resonance structures? If so, please draw these too. Describe the hybridization of the nitrogen atoms.
What mass of ethanol, CH3CH2OH, should be dissolved in 450. g of water to obtain a freezing point of 4.5°C?
A buffer having equal amounts of a weak acid and its conjugate base has a pH =4.4. A small amount of sodium hydroxide was combined to this buffer solution .
discuss how to prepare the solution in question A starting from 0.100 M formic acid and 0.150 M sodium formate
How many grams of oxygen gas are needed to react completely with 16.2 moles of hydrogen gas to produce water?
You burn 0.0956 g of the compound and isolate 0.1356 g of CO2 and 0.0833 g of H2O. What is the empirical formula of the compound.
Write a ratio that compares the rate of diffusion for carbon monoxide gas to the rate of diffusion of oxygen gas.
Determine the molarity of the solution If 3.00 grams of Ammonium sulfate is dissolved in enough H2O to form 300. mL of solution,?
A piece of lithium metal was added to a flask of water on a day when the atmospheric pressure was 757.5 Torr. The lithium reacted completely with the water to produce 250.0 mL of hydrogen gas, collected over the water at 23°C, at which temperature..
What combination of a molecular base (that is a neutral compound, not an ion!) and a salt of the conjugate acid of that molecular base should you select to prepare a buffer solution that would maintain a pH of 9.00? For full credit, explain
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