Chemistry, 07.07.2019 23:00 shyshy6184
Which is an example of a chemical change? a. the separation of a mixture into its components b. the separation of a compound into its elements c. the separation of gases from liquids d. the separation of air into oxygen, nitrogen, and other components?
Answers: 1
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 10:40, rntaran2002
What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0
Answers: 2
Which is an example of a chemical change? a. the separation of a mixture into its components b. the...
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