Given the structure of Se analog of an S8 ring structure and the atom numbering
scheme as shown below,
Give the number of peaks in the 77Se (I = 1/2 , 7.6%) NMR spectrum of the compounds with substitution of Se in S positions indicated:
1. Se substitutions in positions 1 and 2
2. Se substitutions in positions 1 and 3
3. Se substitutions in positions 1, 2 and 4
Answers: 3
Chemistry, 22.06.2019 17:30
A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159
Answers: 2
Chemistry, 22.06.2019 23:00
What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?
Answers: 3
Chemistry, 22.06.2019 23:30
With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals
Answers: 3
Given the structure of Se analog of an S8 ring structure and the atom numbering
scheme as shown be...
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