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Degger [83]
3 years ago
13

Why do you think elements must be heated before they emit colored light?

Chemistry
1 answer:
Mademuasel [1]3 years ago
4 0
The colored light emitted is energy and in order to emit energy the element should first obtain energy. The energy absorbed by the substance can be in the form of radiation, heat or electricity. Hope this answers the question. Have a nice day.
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Carbon dioxide or co^2

Explanation:

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the equation demonstrates a reaction of sodium chloride and fluorine. 2NaCl+F2=2NaF+Cl2. in order for the reaction to proceed, f
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Answer: You would need 1 mole of Fluorine

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During nuclear fission, great amounts of energy are produced from____. A. particle accelerators B. tremendous amounts of mass C.
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During nuclear fission, great amounts of energy are produced from____.

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4 years ago
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3 years ago
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What is the mass in grams of BaCl2 that is needed to prepare 200 mL of a 0.500 M solution
DENIUS [597]

Answer:

= 20.82 g of BaCl2

Explanation:

Given,

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But; molar mass of BaCl2 is 208.236 g/mole

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Therefore, the mass of BaCl2 in grams required is 20.82 g

6 0
3 years ago
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