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Chemistry, 21.06.2019 23:30
Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.
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Chemistry, 23.06.2019 00:30
How many moles of co2 are produced during the complete combustion of 3.6 moles of c2h6
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Chemistry, 23.06.2019 05:00
Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?
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English, 04.03.2021 05:30
English, 04.03.2021 05:30
Mathematics, 04.03.2021 05:30
Mathematics, 04.03.2021 05:30
Mathematics, 04.03.2021 05:30
English, 04.03.2021 05:30
Mathematics, 04.03.2021 05:30
Mathematics, 04.03.2021 05:30
Mathematics, 04.03.2021 05:30