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Which of the following statements concerning the reaction shown below are true? P4 (s) + 3O2 (g) → P4O6 (s) ∆H = -1640 kJ I. heat is absorbed II. heat is released III. rxn is exothermic IV. rxn is endothermic
asked
Mar 9, 2017
Chemistry
high-school
2
answers
3
votes
124k
views
Which sentence contains a progressive verb? a. I was walking down the street when it began to rain. b. Dad will cook dinner tonight while Mom works late. c. I have begun to collect stamps. d. Have you
asked
Mar 8, 2017
English
high-school
1
answer
2
votes
198k
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