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What volumes of 0.40 M HNO2 and 0.56 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55?
HNO2 = __L?
NaNO2 = __L?
The bottom liquid is a relatively heavy lubricating oil, and the top liquid is water. Of the total block volume, 54.2% is immersed in the oil and the balance is in the water. In a separate experiment, an empty flask is weighed, 35.3 cm cubed of th..
write a balance chemical equation for the combustion of 1 mol glycerin, and calculate delta H for this reaction at 298K if burning 1 mol glycerin has a delta E of -54.6 kj
magnesium has three isotopes mg-24 mg-25 and mg-26. the percentage abundance of each in order is 78.70 10.13 11.17.
To determine the concentration of X in an unknown solution, 1.00 mL of 8.01 mM S was added to 4.00 mL of the unknown X solution and the mixture was diluted to 10.0 mL
what is the freezing point of an aqueous solution that has 25.0 g of glucose, C6H12O6 per 100.0g H2O (Kf=186C/M)
An old synthetic procedure starts by calling for fifteen kilo grams of sulfuric acid. If your largest reaction vessel holds ten litres, can you put the fifteen kilograms of acid into the vessel, or would you require to scale down the reaction reag..
In an experiment, 0.30 mol H2 and 0.30 mol I2 are mixed into a 1.00-l container, and the reaction forms HI. If Kc =49 . for this reaction, what is the equalibrium concentration of HI. I2(g) + H2(g) 2HI(g)
At what Kelvin temperature will the reaction proceed 4.50 times faster than it did at 309 K?
how many grams of oxygen are collected in a reaction where 222 ml of oxygen gas is collected over water at a
Explain why most multicellular organisms use an iron-containing protein for oxygen binding rather than free iron. Your answer should include an explanation of (a) the role of heme and (b) the role of the protein itself.
what masses ofnbsp calcium sulfate and phosphoric acid can be produced from the reaction of 1.0kgnbsp calcium phosphate
The alpha particles emitted by radon-222 have an energy of 8.8 x 10^-13 J. If a 200. g Pb brick absorbs 1.0 x 10^10 alpha particles from radon decay, what dose in rads will the brick absorb
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