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vazorg [7]
2 years ago
8

When a hydrocarbon burns in air what component of air reacts?

Chemistry
1 answer:
andre [41]2 years ago
5 0

Answer:

oxygen level reduces

Explanation:

because oxygen supports burning

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3 years ago
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Electrical energy is used to turn the blades of a fan. The amount of energy transformed is seen here: 750 J electrical energy is
Alchen [17]

B) It was transformed into 350 J of heat energy.

Explanation:

The remaining 350J of energy must have been transformed into 350J of heat energy.

A fan works by converting electrical energy into heat energy.

  • According to the third law of thermodynamics "no system is 100% efficient". The conversion of the energy from one form to another involves a lost in energy.
  • Heat is one very familiar way by which energy can be lost.
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3 years ago
Which type of changes are melting, freezing, and boiling?​
tatiyna

Answer:

Adding heat.

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Explanation:

4 0
2 years ago
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Most modern medications are given in doses of milligrams. Thyroid medications, however, are typically given in doses of microgra
leonid [27]

Answer:

0.125 mg

Explanation:

<em>The correct answer would be 0.125 mg</em>

<u>According to the conversion factor, one milligram of a sample is equivalent to one thousand micrograms of the same sample.</u>

milligram = 10^{-3}

microgram = 10^{-6}

Hence,

1 milligram = 1000 micrograms or 1 microgram = 10^{-3} milligram

Therefore, 125 micrograms will be:

  125/1000 = 0.125 milligram

4 0
3 years ago
Metallic bonding occurs between atoms of
Pavel [41]

Answer:

Metallic bonding occurs when you have a metal in the solid or liquid state. The s and p valence electrons of metals are loosely held. They leave their “own” metal atoms. This forms a "sea" of electrons that surrounds the metal cations.

Explanation:

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3 years ago
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