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250.0 ml of 3.0M HCl are added to 400.0 ml of 6M HCl. Assuming that the volumes are additive, what is the final concentration of HCl?
a peanut butter sandwich provides about 1.6 103 kj of energy. a typical adult uses about 95 kcalhr of energy while
3.47 Annual floods for a stream are normally distributed with a mean of 30,000 cfs and a variance of 1 x 106 cfs2. Determine the average return period Tr of a 32,000-cfs flood in the stream.
At what pressure does the mean free path of argon at 25C become comparable to the size of 1dm^3 vessel that contains it? take ?=.36nm^2
How many grams of Potassium Chlorate decompose to passium chloride and 638mL of O2 at 128 degrees C and 752 Torr. 2KClO3 (s) => 2KCl (s) + 3O2(g)
Microwave ovens emit microwave energy with a wavelength of 12.6 cm. What is the energy of exactly one photon of this microwave radiation
The statements in the following multiple choices deal with various aspects of the relationship between vapor pressure and intermolecular forces.
A natural gas mixture is burned in a furnace at a power-generating station at a rate of 13.0 mol per minute. (a) If the fuel consists of 9.3 mole CH4, 3.1 mole C2H6, 0.40 mol C3H8, and 0.20 mole C4H10,
we will titrate 50.0ml of 0.200m nh3aq pkb 4.76 with 0.200m hclaq.a. what is the initial ph of 50.0ml of 0.200m nh3aq
What is the concentration (in M) of the chloride ion when 16 mL of a 0.625 M solution of sodium chloride is combined with 17.3 mL of a 0.551 M solution of iron(III) chloride to a final volume of 56.5 mL
suppose a buffer solution is made from formic and hcho2 and sodium formate nacho2. what is the net ionic equation for
A 0.868 g sample of an unknown acid requires 32.8 mL of a 0.180 M barium hydroxide solution for neutralization. Assuming the acid is diprotic, calculate the molar mass of the acid
how many grams of nickel would be electroplated by passing a constant current of 7.2 A through a solution of NiSO4 for 90 minutes.
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