Chemistry, 19.05.2020 03:12 GreenHerbz206
Harvard Classification Scheme Class Color Prominent spectral lines Surface Temp. (K) O Blue Ionized helium, hydrogen > 25,000 B Blue-white Neutral helium, hydrogen 11,000 – 25,000 A White Hydrogen, ionized sodium, ionized calcium 7,500 – 11,000 F White Hydrogen, ionized sodium and calcium; neutral sodium and calcium 6,000 – 7,500 G Yellow Neutral sodium and calcium, ionized calcium, ionized iron, ionized magnesium 5,000 – 6,000 K Orange Neutral calcium, neutral iron, neutral magnesium 3,500 – 5,000 M Red Neutral iron, neutral magnesium, and neutral titanium oxide (not shown) < 3,500 Use the Harvard Classification Scheme (shown in the table above) to answer the following quesiton: The Sun contains spectral lines from neutral sodium and calcium as well as ionized calcium, magnesium and iron. Of the choices below, which could be the surface temperature of the Sun? 4,200 K 5,800 K 8,900 K 14,300 K
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Chemistry, 21.06.2019 13:10
Given the table below, what is the chemical formula for a compound between rb and the nitrate ion no3 -1? nitrate ion no3 -1 phosphate po4 -3 sulfate so4 -2 acetate c2h3o2 -1 ammonium nh4 +1 chromate cro4 -2 carbonate co3 -2 dichromate cr2o7 -2 permanganate mno4 -1 sulfite so3 -2 rbno3 rb2no3 rb(no3)2 rb2(no3)3
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Chemistry, 22.06.2019 03:10
The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?
Answers: 2
Chemistry, 22.06.2019 11:30
If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood
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Harvard Classification Scheme Class Color Prominent spectral lines Surface Temp. (K) O Blue Ionized...
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