Chemistry, 12.12.2021 16:10 kelbruggie
Which of the following correctly gives the best coefficients for the reaction below?
Zn + HCl → ZnCl2 + H2
2, 4, 2, 4
1, 2, 1, 4
1, 2, 1, 1
2, 1, 1 ,1
1, 1, 2, 1
Thank you for the help in advance.
Answers: 1
Chemistry, 21.06.2019 15:20
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 17:20
Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.
Answers: 2
Which of the following correctly gives the best coefficients for the reaction below?
Zn + HCl → Zn...
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