Chemistry, 16.11.2020 23:20 cfdewar5403
5. Which of the following would BEST indicate an exothermic reaction is taking place?
a. The ice melts
b. Bubbles appear
c. A sweet odor or smell is produced
d. The temperature of the mixture rises 14 degrees in two minutes
Answers: 2
Chemistry, 21.06.2019 14:20
Calculate the enthalpy of the following reaction: 4 b (s) + 3 o2 (g) → 2 b2o3 (s) given the following pertinent information: (a) b2o3 (s) + 3 h2o (g) → 3 o2 (g) + b2h6 (g), δhoa = +2035 kj (b) 2 b (s) + 3 h2 (g) → b2h6 (g), δhob = +36 kj (c) h2 (g) + latex: \frac{1}{2} 1 2 o2 (g) → h2o (l), δhoc = −285 kj (d) h2o (l) → h2o (g), δhod = +44 kj
Answers: 3
Chemistry, 21.06.2019 17:30
Which uses electromagnetic radiation to discover the properties and composition of bodies in space? space probe space station space shuttle space observatory
Answers: 2
Chemistry, 21.06.2019 22:30
Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.
Answers: 1
5. Which of the following would BEST indicate an exothermic reaction is taking place?
a. The ice me...
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