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nalin [4]
2 years ago
13

What component of air causes the flame in a bunsen burner to become bluer?

Chemistry
1 answer:
Lyrx [107]2 years ago
7 0
<h3><u>Answer;</u></h3>

Oxygen

<h3><u>Explanation;</u></h3>
  • <em><u>A bunsen burner attains a blue gas flame when there is enough oxygen for complete combustion. </u></em>
  • When there is sufficient oxygen, the gas flame appears blue because complete combustion creates enough energy to excite and ionize the gas molecules in the flame.
  • In other words; increasing oxygen supply, less black body-radiating soot is produced as a result of a more complete combustion and the reaction creates enough energy to excite and ionize gas molecules in the flame, and a blue flame is formed.
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A is the correct answer
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2 years ago
How many grams of Br are in 335g of CaBr2
ASHA 777 [7]
The answer is 267.93 g

Molar mass of CaBr2 is the sum of atomic masses of Ca and Br:
Mr(CaBr2) = Ar(Ca) + 2Ar(Br)
Ar(Ca) = 40 g/mol
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Mr(CaBr2) = 40 + 2 * 79.9 = 199.8 g/mol

The percentage of Br in CaBr2 is:
2Ar(Br) / Mr(CaBr2) * 100 = 2 * 79.9 / 199.8 * 100 = 79.98%

Now make a proportion:
x g in 79.98%
335 g in 100%
x : 79.98% = 335 g : 100%
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3 years ago
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3 years ago
Calculate the molarity of 29.0g of ethanol (C2H5OH) in 545 mL of solution.
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hope this helps!


5 0
3 years ago
Read 2 more answers
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