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Nuetrik [128]
3 years ago
8

True or False: All stars are the same color.

Chemistry
2 answers:
nadezda [96]3 years ago
8 0

Answer:

False

Explanation:

They are not the same color since they do not all have the same temperature

Temperature defines their color

Sophie [7]3 years ago
5 0
No when stars died out they change colors or when they are first born there colors show you how old they are
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4 years ago
The following reaction shows sodium carbonate reacting with calcium hydroxide.
velikii [3]

Ans: 15.1 grams

Given reaction:

Na2CO3 + Ca(OH)2 → 2NaOH + CaCO3

Mass of Na2CO3 = 20.0 g

Molar mass of Na2CO3 = 105.985 g/mol

# moles of Na2CO3 = 20/105.985 = 0.1887 moles

Based on the reaction stoichiometry: 1 mole of Na2CO3 produces 2 moles of NaOH

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Molar mass of NaOH = 22.989 + 15.999 + 1.008 = 39.996 g/mol

Mass of NaOH produced = 0.3774*39.996 = 15.09 grams


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