Chemistry, 11.11.2020 22:10 hela9astrid
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Which of the following phenomena would be associated with the Big Bang Theory?
The universe is contracting
Hot, expanding matter eventually condensed into galaxies.
The universe began as a cool massive star.
Cool, expanding matter eventually heated and became suns.
The universe began in a hot dense state.
The universe is expanding.
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Chemistry, 21.06.2019 21:30
Which substances have the lowest melting points: ionic covalent, or metallic
Answers: 1
Chemistry, 23.06.2019 01:30
The solubility of barium nitrate is 9.02 g/100 g h2o at 20°c. a 15.2 g sample of barium nitrate is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated? a. unsaturated b. saturated c. supersaturated
Answers: 1
Chemistry, 23.06.2019 07:30
The compound formed from 2 atoms of hydrogen and one atom of oxygen is
Answers: 1
Chemistry, 23.06.2019 10:30
Silver is a white metal that is an excellent conductor. silver tarnishes when exposed to air and light. the density of silver is 10.49 g/cm3. the melting point is 962oc and the boiling point is 2000oc. a chemical property of silver is
Answers: 3
Directions: Click on the correct answers.
Which of the following phenomena would be associated with...
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