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A sports-ultility vehicle has an average mileage rating of 18 miles per gallon. How many galllons of gasoline are needed for a 397-mile trip?
A buffer is made up 0.24 M propanoic acid, CH3CH2COOH, a weak monoprotic acid, and 0.17 M of sodium propanoate, CH3CH2COONa. What is the pH of the solution.
What is the initial concentration (in M) when 17.8 mL of a iron(lll) chloride solution was diluted with 15.3 mL of solvent to a final concentration of 0.725 M? Assume the volumes are additive.
Indicate which compounds present i) in the reactants and ii) in the products from this lab experiment could be expected to give positive tests with a) permanganate and b) ceric ammonium nitrate.
How much heat (in {rm kJ}) is evolved in converting 1.00 mol of steam at 140.0 C to ice at -55.C? The heat capacity of steam is 2.01J/g* C and of ice is 2.09 j/g* C.
Determine the equilibrium constant for the following reaction at 298 K. SO3(g) + H2O(g) ? H2SO4(l) ?G° = -90.5 kJ
Indicate the kind of hybridization (sp, sp2, sp3) you expect for each carbon atom in the following molecule. Why does each carbon atom have that hybridization?
calculate the average moles of ascobic acid in the pipetted sample used for titration d)Calculate the average moles of ascobic acid in the crushed tablet.
Write a balanced chemical reaction for the formation of a free fatty acid from a soap molecule under acidic conditions.
What mass of oxygen (in grams) reacts when 13.2 g of methanol (CH3OH) are combusted in oxygen to produce carbon dioxide and water
A piece of a newly synthesized material of mass 25.0 g at 80.0C is placed in a calorimeter containing 100.0 g of water at 20.0C. If the final temperature of the system is 24 0C
First ,2-chlorotoluene react with acetylchloride. then acylation product (an oil ) react with its corresponding carboxylic acid(aluminum(3) chloride)
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.508g/L at 25C and 721mmHg?
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