Chemistry, 09.12.2020 01:00, mjwenz8018
1. List some possible signals that a chemical reaction has occurred. Are these clues always visible? Can you think of any other indications that a chemical reaction has occurred?
Answers: 3
Chemistry, 21.06.2019 18:00, 767sebmont
Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly
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Chemistry, 21.06.2019 23:30, mastershadow2018
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 22:30, lanashanabJHsbd1099
Who discovered a pattern to the elements in 1869?
Answers: 1
1. List some possible signals that a chemical reaction has occurred. Are these clues always visible?...
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