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ser-zykov [4K]
3 years ago
10

The most abundant trace gas in the atmosphere is _____. neon hydrogen argon helium

Chemistry
2 answers:
ad-work [718]3 years ago
4 0

The answer is C, argon.


zhenek [66]3 years ago
3 0

<em>Answer:</em>

  • Argon

<em>Explain:</em>

  • The most abundant gas in the atmosphere is Nitrogen (78.09%), The 2nd most abundant is oxygen (20.94%) and third one is argon (0.93%) and 4th one is CO2 (0.04%). While all others are in small amount like traces.
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Answer:

All liquid glow products depend on a chemical process known as CHEMILUMINESCENCE to produce their light. Chemiluminesence is a chemical reaction that causes a release of energy in the form of light. To produce this light the electrons in the chemicals become excited and rise to a higher energy level.To utilise this process glowsticks contain two liquids; hydrogen peroxide and tert-butyl alcohol. When mixed together it is these liquids that create the glow. Fluorescent dyes are also used in the alcohol to alter the colour of the light emitted. Chemiluminesence is a chemical reaction that causes a release of energy in the form of light.

Explanation:

Hope It Helps!

6 0
3 years ago
What is the mass in grams of 0.280 mole sample of sodium hydroxide NaOH​
vivado [14]

Answer:

The mass of 0.280 mole sample of sodium hydroxide NaOH​ is 11.2 grams.

Explanation:

To know the mass in grams of 0.280 moles of sample of sodium hydroxide NaOH, you must know the molar mass of the compound, that is, the mass of one mole of a substance, which can be an element or a compound.

So you know:

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  • O: 16 g/mole
  • H: 1 g/mole

So, the molar mass of NaOH is:

NaOH= 23 g/mole + 16 g/mole+ 1 g/mole= 40 g/mole

Then the following rule of three can be applied: if in 1 mole of sodium hydroxide there are 40 grams, in 0.280 moles how much mass is there?

mass=\frac{0.28 moles*40 grams}{1 mole}

mass= 11.2 grams

<u><em>The mass of 0.280 mole sample of sodium hydroxide NaOH​ is 11.2 grams.</em></u>

4 0
3 years ago
6. Which of the following statements correctly describes what happens to the diaphragm during an
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Answer:

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Explanation:

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Answer:

it is b

Explanation:

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3 years ago
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