(b) Using 25.0 cm of aqueous sodium hydroxide, 2.24 mol / dm'3, 3.86 g of crystals were
obtained. Calculate the percentage yield.
2NaOH + H2SO—>Na2SO4 + 2H2O
Na2SO4 + 10H20—>Na S04.10H2O
I
Number of moles of NaOH used =
Maximum number of moles of Na2S04.10H2O that could be formed =
Mass of one mole of Na2S04.10H20 = 322g
Maximum yield of sodium sulphate-10-water =
Percentage yield =
Answers: 1
Chemistry, 22.06.2019 05:00, happy121906
Which position represents spring in the southern hemisphere? a) b) c) d)
Answers: 2
Chemistry, 23.06.2019 07:00, Teddybearnerd
The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?
Answers: 2
Chemistry, 23.06.2019 17:50, lilspike420
How do chemical equations demonstrate conservation of mass
Answers: 1
(b) Using 25.0 cm of aqueous sodium hydroxide, 2.24 mol / dm'3, 3.86 g of crystals were
obtained. C...
Social Studies, 27.02.2021 17:30
Chemistry, 27.02.2021 17:30
English, 27.02.2021 17:30
Geography, 27.02.2021 17:30
Mathematics, 27.02.2021 17:30