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Determine the total concentration (in mol/L) of Cl- ions in a solution formed from the reaction of 500mL of 1.0M barium hydroxide Ba(OH)2 with 182mL of 1.51M hydrochloric acid HCl
Assuming no heat loss by the system, what will be the final temperature when 84 g of water at 10.0oC are mixed with 67 g of water at 50.0oC
Calcium nitrate will react with ammonium chloride at slightlyelevated temperatures, as represented in the equation- Ca(NO3)2(s) +2NH4Cl(s) 2N2O(g) +CaCl2(s) + 4H2O(g)
A sample of methane gas (CH4) at 18.8 oC is heated. The pressure increases from 1.78 atm to 2.46 atm, and the volume of the sample changes from 4.09 L to 1.89 L.
Hydrogen gas produced in the laboratory by the reaction of zinc and hydrochloric acid was collected over water at 25°C. The barometric pressure at the time was 742.5 mm Hg.
Calculate the number of moles of benzaldehyde and thiamine hydrochloride used in the Procedure. Explain why benzaldehyde is used for the theoretical yield calculation
The specific heat of calcium metal is 0.653J/gK. How much heat, in joules, is required to heat a 58.5 gram sample of calcium from -5.2oC to 16.7oC. Enter your answer in scientific notation with no units.
In biological and medical applications, it is often necessary to study the autoionization of water at 37 degrees centigrade instead of 25 degrees centigrade. given that Kw for water is 2.5 X 10^-14 at 37 degrees centigrade, calculate the pH of pur..
Show the products of the reactions of these carboxylic acid with PBr3/Br2 before and after hydrolysis. a) Pentanoic acid
Calculate the molarity of a NaOH solution if 34.17 mL of the NaOH solution were required to titrate 0.6321 g of KHP. KHP (204.23 g/mole) is the shorthand (not the chemical formula) for the primary standard potassium hydrogen phthalate
Suppose one wated to take another approach where C is heated until 5% of the atoms occupy the electronically excited state. Consedering only the lowest-energy ground state and the elctronically excited state
What mass of carbon dioxide is produced by the complete combustion of 5.50 grams of hexane, C6H14
Calculate the change in entropy of the copper, taking the Cpm=24.4 J/(K Mole). The experiment was then repeated with the copper immersed in a stream of water that maintains its temperature at 293 K. Calculate the change in entropy of the copper an..
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