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A sample of 0.255 mole of gas has a volume of 748 mL at 28°C. Calculate the pressure of this gas. (R= 0.0821 L · K)
Calculate the molality and molarity of an NH3 solution made up of 37.0 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
Write an equation for the hydrogenation of glyceryl trilinolenate, a fat formed from glycerol and three linolenic acid molecules.
(a) How many mL of KOH will it take to reach the equivalence point? (b) Calulate the pH at the equivalence point. The Ka of HClO is 3.8x10^-8
Carbon tetrachloride (CCL4) is a useful solvent for both IR absorption and Raman Spectroscopy because it has few vibrational modes. The mostr intense Raman band occurs at 459.0 cm^-1.
Consider the following standard reduction potentials in acid solution: Cr3+ + 3e- ? Cr Eo = -0.74 V, Co2 + 2e- ? Co Eo = -0.28 V, MnO4 + 8H+ + 5e- ? Mn2+ + 4H2 Eo = +1.51 V
What constant current (in amperes) is required to produce aluminum by the Hall-Heroult
What is the relationship between the standard cell potentials, E, for the following two galvanic cell reactions?
If 85.0 mg of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
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
A furnace is burning coal at the rate of 950,000 kg of coal/day. The coal contains 5.5% ash and 99% of that ash is collected in the air pollution control (APC) device downstream from the furnace
How would the observed molar mass of the unknown lioquid have been affected by the following circumstances (would it be higher, lower than the true value, or remain unchanged.
The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?
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