Chemistry, 17.06.2021 22:50 29delphina
Đem hóa hơi 6,7 g hỗn hợp X gồm ch3cooh checooch3 ch3cooc2h5 và hcooc2h5 thu được 2,24 lít khí hơi đktc đốt cháy hoàn toàn 6,7 g X thì thu được khối lượng H2O là
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Chemistry, 21.06.2019 19:00
Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?
Answers: 2
Chemistry, 22.06.2019 04:20
Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h
Answers: 1
Chemistry, 22.06.2019 06:30
Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.
Answers: 1
Chemistry, 22.06.2019 12:10
|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions.what elemental classification does oxygen belongto? done
Answers: 3
Đem hóa hơi 6,7 g hỗn hợp X gồm ch3cooh checooch3 ch3cooc2h5 và hcooc2h5 thu được 2,24 lít khí hơi đ...
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