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A volume of 90.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 20.2 mL of 1.50M H2SO4 was needed? The equation is:
2KOH(aq) + H2SO4(aq) ---> K2SO4(aq) + 2H2O(l)
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air.
the acid-dissociation constants of phosphoric acid h3po4 are ka1 7.5 times 10-3 ka2 6.2 times 10-8 and ka3 4.2 times
You have two salts, AgX and AgY, with very similar Ksp values. You know that Ka for HX is much greater that Ka for HY. Which salt is more soluble in acidic solution. Explain
Denoting the initial, unknown concentration CD2+, write an equation to calculate the final concentration , CD2+ considering the dilution factor, units are ppm.
Calculate the potential developed bya voltaic cell using the following reaction if all dissolved species
An element X forms an iodide (XI3) and a chloride (XCI3). THe iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2 XI3 + 3 CI2 -----> 2 XCI3 + 3 I2. If 0.5000 g of XI3 is treated, 0.2360 g XCI3 is obtaind..
For the reaction shown, calculate how many moles of NO2 form when 5.0 mol N2O5 completely reacts. 2 N2O5(g) 4 NO2(g) + O2(g)
a 48.4 ml sample of gas in a cylinder is warmed from 19 degrees celsius to to 88 degrees celsius. what is its volume at
The estimated costs for remodeling the interior of an apartment are: three gallon cans of paint at $13.22 each (including tax), two paint brushes at $9.53 each (including tax), and $135 for a helper.
Large quantities of liquefied natural gas (LNG) are shipped by ocean tanker. At the unloading port provision is made for vaporization of the LNG so that it may be delivered to pipelines as gas.
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult
Predict whether the following compounds will undergo the benzoin condensation, faster slower than benzaldehyde or give no reaction. You must think about the intermediate and the nucleophile
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