What is the percent by mass of acetic acid in vinegar
Vinegar is a dilute solution of acetic acid. A 15.64 mLsample of vinegar with a density of 1.06g/mL requires 24.80 mL of 0.469 N KOH for titration. What is the percent by mass of acetic acid in vinegar.
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One of the fastest super computers cab perform about 12 teraflpos. Determine how manyseconds it would take this computer to count a mole of things.
Calculate the entropy change for converting 1 mol of mercury vaporat 650 K to liquid mercury at 500K. The molar heat capacitiesof Hg(l) and Hg(g) are 28.0 and 21.0 J/K.mol, respectively.
Calculate the average H-S bond enthalpy in H2S(g) given that the standard enthalpies of formation of H2S(g), H(g) and S(g) are-20.1, 218.0, and 223.0 kJ/mol, respectively.
Using 5% significance level test whether expectant mothers' cigarette smoking reduces the bone mineral content of their new born babies.
At this point, a miner of mass 100 kg gets into the cage. How much further will the cage descend as he gets in, assuming there is no brake to prevent this motion.
What is the molarity of a KOH solution prepared by dissolving1.350g KOH in enough water to make a solution with a total volumeof 250.0 mL?
Suppose that you wish to fabricate a uniform wire out of 1.10 g of copper. If the wire is to have a resistance R = 0.800 , and if all of the copper is to be used.
Suppose a deck of 52 cards is shuffled and the top two cards are drawn. How many ordered pairs of cards could possibly result as outcomes?
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