Chemistry, 18.12.2020 20:10 nyiamcbride5630
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1. What is the effect of molecular weight (M. wt.) on melting and boiling points of alkanes?
2. What is the effect of branching on melting and boiling points of alkanes?
3. What ara the differences between the homolytic and heterolytic bond dissociation ? And why homolytic dissociation energy of H-H (104 KJ/mol) is lower than its heterolytic bond dissociation energy (401 KJ/mol)?
Answers: 3
Chemistry, 22.06.2019 17:00
Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.
Answers: 1
Chemistry, 23.06.2019 10:30
Which of the following pairs of elements is most likely to form an ionic compound? a oxygen and fluorine b sodium and aluminum c calcium and chlorine d nitrogen and sulfur
Answers: 1
Chemistry, 23.06.2019 10:50
Gene expression control that occurs during the generation of rna is a. controlled at transcription b. control before transcription c. controlled after transcription d. controlled after translation
Answers: 3
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