We would like to make a golden standard kilogram in the shape of circular cylinder. The density of gold is 19.32 g/cm3. a) Find the volume of the kilogram standard of gold in cubic meter. b) In order to minimize the effect of surface contamination, the height of this golden standard kilogram is equal to its diameter. Find the height of this golden standard kilogram in mm.
Answers: 3
Chemistry, 21.06.2019 15:20, zymikaa00
Both 1,2−dihydronaphthalene and 1,4−dihydronaphthalene may be selectively hydrogenated to 1,2,3,4−tetrahydronaphthalene. one of these isomers has a heat of hydrogenation of 101 kj/mol (24.1 kcal/mol), and the heat of hydrogenation of the other is 113 kj/mol (27.1 kcal/mol). match the heat of hydrogenation with the appropriate dihydronaphthalene.
Answers: 2
Chemistry, 22.06.2019 00:00, lilyclairehutson
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
We would like to make a golden standard kilogram in the shape of circular cylinder. The density of g...
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