Can someone help? i will mark brainliest
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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.
Answers: 2
Chemistry, 22.06.2019 05:30
Which other elements contain the same number of outer electrons as sodium
Answers: 3
Chemistry, 23.06.2019 09:30
Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. moss campion is one of the plants found in the alpine biome. it has small leaves and a cushion shape that protect it from the wind and freezing temperatures in the alpine. how has the moss campion adapted to enable its survival in the alpine biome? a. waxy needles b. cone-shaped c. thin trunks d. low-growing
Answers: 1
History, 02.07.2019 23:30
History, 02.07.2019 23:30
Mathematics, 02.07.2019 23:30
Mathematics, 02.07.2019 23:30
English, 02.07.2019 23:30
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Geography, 02.07.2019 23:30
History, 02.07.2019 23:30
Mathematics, 02.07.2019 23:30
History, 02.07.2019 23:30
Mathematics, 02.07.2019 23:30
Mathematics, 02.07.2019 23:30