Chemistry, 03.09.2021 07:30 reynamarie3
Select the evidence that supports the big bang theory. (select 3)
Question 4 options:
Cosmic radiation shows evidence of an explosion.
Blue-shifted star spectra show evidence the universe is shrinking.
Evidence shows a black hole exists at the beginning of the universe.
Evidence shows the universe is made of mostly hydrogen and helium.
Red-shifted star spectra show evidence the universe is expanding.
Answers: 3
Chemistry, 22.06.2019 13:30
Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?
Answers: 1
Chemistry, 22.06.2019 14:00
Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20βc. what is the molar mass of this gas?
Answers: 2
Chemistry, 22.06.2019 15:30
Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.
Answers: 2
Select the evidence that supports the big bang theory. (select 3)
Question 4 options:
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