Chemistry, 18.07.2019 12:30 scottytohotty
How do scientists know that the universe is expanding? question 2 options: a) the doppler effect shows stars with red shifted light. b) the doppler effect shows stars with blue shifted light. c)the doppler effect shows stars with green shifted light. d)the doppler effect shows stars with yellow shifted light.
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Chemistry, 21.06.2019 21:10
Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?
Answers: 2
Chemistry, 22.06.2019 08:40
Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.
Answers: 2
Chemistry, 23.06.2019 01:00
Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold
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Chemistry, 23.06.2019 06:30
When microscope slides are stained to show blood cells, the small red blood cells that appear on the slides are much numerous than the large white blood cells. this supports the concept that
Answers: 1
How do scientists know that the universe is expanding? question 2 options: a) the doppler effect s...
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