Chemistry, 01.09.2020 22:01 buddyclayjohnson
The red star in the right top portion of this picture is Betelgeuse, one of the most prominent stars in the constellation Orion. You can easily see this constellation during winter in the northern hemisphere. Betelgeuse is a red supergiant star which is ~ 634 light years from Earth. To measure the surface temperature of stars astronomers use Wien's law which relates the maximum wavelength of light emitted to the temperature. Mathematically Wien's law is written {\lambda}_{max}T = 0.2898 cm K. Betelgeuse has a {\lambda}_{max} of 8072 Å where 1 Å = 1 x 10^{−8} cm. What is Betelgeuse's surface temperature, in K? [Image description: The picture is of the night sky. Thousands of stars are shining. Some are red, some white and some blue.]
Answers: 3
Chemistry, 22.06.2019 10:30, kdenormandie3122
Geothermal energy for industrial use is available almost anywhere. a. true b. false
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Chemistry, 22.06.2019 14:30, clemsongirl5392
Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:
Answers: 2
Chemistry, 22.06.2019 16:50, TheOriginal2x
Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m
Answers: 3
The red star in the right top portion of this picture is Betelgeuse, one of the most prominent stars...
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