Chemistry, 11.07.2019 21:30 sindy35111
An analytical balance was used to weigh 200.01 mg of dry solid sodium acetate {nac2h3o2 ~ naac mw = 82.0343, pka (hc2h3o2 ~ hac) = 4.76} which was transferred to a 100.00 ml volumetric flask that was then filled to the line with carbonate-free water and mixed well. determine the ph of each of the solutions below.
a.) the original sodium acetate solution
b.) a 25.00 ml aliquot of the naac solution plus 25.00 ml of 0.100 m aqueous acetic acid (hac) solution
c.) a 25.00 ml aliquot of the naac solution plus 15.00 ml of 0.100 m aqueous hydrogen chloride solution
Answers: 1
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Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) → co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)
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Chemistry, 23.06.2019 11:00
Which of the following reactions represents an exothermic reaction? nh3(g) + 12.0 kcal ½n2(g) + 3/2 h2(g) ch4 + 2o2 co2 + 2h2o + 212,800 cal c + 2s cs2, h = 27,550 cal c(graphite) c(diamond), h = 0.45 kcal 2h2o 2h2 + o2, h = +58 kcal
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An analytical balance was used to weigh 200.01 mg of dry solid sodium acetate {nac2h3o2 ~ naac mw =...
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