Chemistry, 13.04.2021 03:10 madmatt873
What pharmaceutical brand vaccines are available to citizens of the united states?
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Chemistry, 21.06.2019 23:00
The drawing represents the movement of particles in a substance. what changes of state can this substance undergo
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This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.
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Particles vibrate in a rigid structure and do not move relative to their neighbors.
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Chemistry, 22.06.2019 12:00
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
What pharmaceutical brand vaccines are available to citizens of the united states?...
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