Chemistry, 10.07.2019 08:30 tybreyonnaHco7855
Asample contains both naoh and nacl. 0.500 g of this sample was dissolved in water to make a 20.0 ml solution and then this solution was titrated by 0.500 mol/l hcl solution. if 22.1 ml of hcl was used to reach the end point, what is the mass % of naoh in the sample?
Answers: 1
Chemistry, 21.06.2019 12:30
Asample contains 16.75 g of the radioisotope u-236 and 50.25 g of its daughter isotope, th-232. how long did it take for decay to take place if one half-life of u-236 is 23 million years? 46 million years 69 million years 92 million years 115 million years
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Chemistry, 22.06.2019 05:30
Modern weaponry has increased the number of deaths in wars and violent conflicts.
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Chemistry, 22.06.2019 14:30
Consider the reduction reactions and their equilibrium constants. cu+(aq)+eโโฝโโโcu(s)pb2+(aq)+2eโโฝโโโpb(s)fe3+(aq)+3eโโฝโโโfe(=6.2ร108=4.0ร10โ5=9.3ร10โ3 cu + ( aq ) + e โ โฝ โ โ โ cu ( s ) k =6.2ร 10 8 pb 2 + ( aq ) +2 e โ โฝ โ โ โ pb ( s ) k =4.0ร 10 โ 5 fe 3 + ( aq ) +3 e โ โฝ โ โ โ fe ( s ) k =9.3ร 10 โ 3 arrange these ions from strongest to weakest oxidizing agent.
Answers: 3
Asample contains both naoh and nacl. 0.500 g of this sample was dissolved in water to make a 20.0 ml...
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