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Gala2k [10]
2 years ago
11

What is necessary to produce visible light from chemical compounds?

Chemistry
1 answer:
erastova [34]2 years ago
5 0

Answer:

the molecule must contain either pi bonds or atoms with non-bonding orbitals.

Explanation:

A non-bonding orbital is a lone pair on, say, oxygen, nitrogen or a halogen.

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why a gas, at constant pressure, increases greatly in volume when it is gently heated but a solid does not
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How many grams of iron can be made with 21.5g of Fe2O3
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The mass (in grams) of iron, Fe that can be made from 21.5 g of Fe₂O₃ is 15.04 g

We'll begin by writing the balanced equation for the reaction. This is given below:

2Fe₂O₃ -> 4Fe + 3O₂

  • Molar mass of Fe₂O₃ = 159.7 g/mol
  • Mass of Fe₂O₃ from the balanced equation = 2 × 159.7 = 319.4 g
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  • Mass of Fe from the balanced equation = 4 × 55.85 = 223.4 g

From the balanced equation above,

319.4 g of Fe₂O₃ decomposed to produce 223.4 g of Fe

<h3>How to determine the mass of iron, Fe produced</h3>

From the balanced equation above,

319.4 g of Fe₂O₃ decomposed to produce 223.4 g of Fe

Therefore,

21.5 g of Fe₂O₃ will decompose to produce = (21.5 × 223.4) / 319.4 = 15.04 g of Fe

Thus, 15.04 g of Fe were produced.

Learn more about stoichiometry:

brainly.com/question/9526265

#SPJ1

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