Chemistry, 16.10.2019 19:00 memphissmith5779
The freezing point of 56.25 g of a pure solvent is measured to be 43.14 ºc. when 2.23 g of an unknown solute (assume the van 't hoff factor = 1.) is added to the solvent the freezing point is measured to be 40.22 ºc. answer the following questions ( the freezing point depression constant of the pure solvent is 7.23 ºc·kg solvent/mol solute).
1.what is the molality of the solution?
? m
2. how many moles of solute are present?
? mol
3.what is the molecular weight of the solute?
? g/mol
the freezing point of 42.26 g of a pure solvent is measured to be 45.45 ºc. when 2.34 g of an unknown solute (assume the van 't hoff factor = 1.) is added to the solvent the freezing point is measured to be 42.52 ºc. if the freezing point depression constant of the pure solvent is 7.03 ºc·kg solvent/mol solute calculate the molar mass of the solute.
? g/mol
Answers: 3
Chemistry, 22.06.2019 00:00
1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division
Answers: 1
Chemistry, 22.06.2019 19:00
Which change to the system wood cause the freely-moving piston to lower?
Answers: 1
Chemistry, 22.06.2019 19:30
If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)
Answers: 2
The freezing point of 56.25 g of a pure solvent is measured to be 43.14 ºc. when 2.23 g of an unknow...
Social Studies, 09.12.2020 23:30
Biology, 09.12.2020 23:30
Mathematics, 09.12.2020 23:30
Social Studies, 09.12.2020 23:30
Arts, 09.12.2020 23:30
Mathematics, 09.12.2020 23:30
History, 09.12.2020 23:30
Mathematics, 09.12.2020 23:30
Social Studies, 09.12.2020 23:30