Chemistry, 02.03.2021 17:20 sandaepoe001
Which scientific phenomenon helps scientists determine the chemical composition of some stars?
A.
absorption of light in a star’s atmosphere
B.
dispersion of light as it enters Earth’s atmosphere
C.
reflection of light
D.
refraction of light
Answers: 1
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7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '
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If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?
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In the reaction h2co3 (aq) + 3nh3 (aq) = 2 nh4+ (aq) + co3 2-, how many electrons are transferred?
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Which scientific phenomenon helps scientists determine the chemical composition of some stars?
A. <...
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