Chemistry, 30.06.2019 02:30 brooke3493
Which statement is true? a) breaking a chemical bond releases energy. b) when energy is absorbed, the reaction is said to be endothermic and â†h is negative (–). c) bond dissociation energies are always positive numbers. d) the stronger the bond, the lower its bond dissociation energy. 2. based on the reaction, n2 + o2 → 2 no â†h = 43.2 kcal which statement is true? a) 43.2 kcal are consumed when 14.00 g of n2 reacts. b) 43.2 kcal are produced when 1.00 g of o2 reacts. c) 43.2 kcal are produced when 1.00 mole of o2 reacts. d) 43.2 kcal are consumed when 2.00 moles of no is produced.
Answers: 1
Chemistry, 21.06.2019 19:00
Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?
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Which statement is true? a) breaking a chemical bond releases energy. b) when energy is absorbed, t...
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