Chemistry, 07.12.2021 18:50 jewlbug4358
A researcher studies the light emitted by a distant star. The researcher finds that the light received from the star falls slightly closer to the red end of the electromagnetic spectrum when compared to a similar source closer to Earth. The researcher claims that the star is moving away from Earth.
Is the researcher correct?
A No. All hot stars emit red-colored light.
B Yes. All moving objects emit red-colored light.
C No. The red-colored light emission is due to the composition of the star.
D Yes. Light from any object moving away from Earth shifts to red-colored light.
Answers: 3
Chemistry, 22.06.2019 04:40, marknjenbennetp3j1v1
Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol
Answers: 3
Chemistry, 22.06.2019 18:00, Jazmineboo7709
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
Answers: 2
A researcher studies the light emitted by a distant star. The researcher finds that the light receiv...
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