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Chemistry, 22.06.2019 18:00
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
Answers: 2
Chemistry, 23.06.2019 04:10
What does the field of thermodynamics relate to a-changes in nuclear reactions b- changes in energy in systems c changes in molecular structure d changes in atomic properties
Answers: 1
Chemistry, 23.06.2019 11:00
Which of the following reactions is endothermic? h2(g) + Β½ o2(g) h2o(g), h = -57.82 kcal Β½n2(g) + o2(g) + 8.1 kcal no2(g) Β½ n2(g) + 3/2 h2(g) nh3(g) + 11.0 kcal c(diamond) + o2(g) co2, h = -94.50 kcal
Answers: 2
A student drew the following flowchart to show the movement of nutrients.
Factory β Air β Plants β...
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