Chemistry, 05.05.2020 03:18 makaylashrout77
28. An element X is represented as 40 18X. (Note that X does not represent the actual symbol of the element)
a) Give the number of protons, neutrons and electrons in an atom of the element (1 mark)
Answers: 2
Chemistry, 21.06.2019 15:20
Both 1,2âdihydronaphthalene and 1,4âdihydronaphthalene may be selectively hydrogenated to 1,2,3,4âtetrahydronaphthalene. 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 05:30
What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?
Answers: 1
Chemistry, 22.06.2019 07:20
Part b: study of equilibrium on solubility: mg(oh)2(s) â mg2+(aq) + 2 ohâ(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic
Answers: 1
Chemistry, 22.06.2019 22:00
Imagine one batch of soup (batch âaâ) is made with 8.19 g/can of salt, according to the recipe, and a second batch of soup (batch âbâ) is made with 8.32 g/can of salt. explain which batch would be more resistant to frost damage if it is shipped a great distance in winter and explain why.
Answers: 2
28. An element X is represented as 40 18X. (Note that X does not represent the actual symbol of the...
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