Chemistry, 18.10.2021 19:20 ddcope1030

Scientists are a long way from developing the technology needed to use nuclear fusion to produce electricity.

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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, 22.06.2019 08:00

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

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Chemistry, 22.06.2019 12:30

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

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Chemistry, 22.06.2019 14:00

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