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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 08:50
If two atoms are bonded to a central atom with no lone pairs,how will they be arranged
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Chemistry, 22.06.2019 10:30
How do you lengthen a pattern piece? (family and consumer science, sewing)
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Chemistry, 22.06.2019 11:00
The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
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Which is an example of a chemical change? melting boiling evaporation burning?...
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