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Sergio039 [100]
2 years ago
5

Question 1 (1 point)

Chemistry
1 answer:
Colt1911 [192]2 years ago
8 0

Answer:

  1. Both are made up of two substances that are not chemically combined.
  2. oxygen (O2)
  3. carbon dioxide (CO2 )
  4. air (N2 mixed with O­2 and CO2)
  5. Pure substances cannot be separated by physical means.

Explanation:

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Because if the the technique is wrong the scientist is wrong I’m sorry it’s a bad answer :(
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What is not matter in chemistry?? ​
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Answer:

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Explanation:

Energy: Light, heat, kinetic and potential energy, and sound are non-matter because they are massless. Objects that have mass and are matter may emit energy.

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If 316 mL nitrogen is combined with 178 mL oxygen, what volume of N2O is produced at constant temperature and pressure if the re
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Answer;

=259 ml

Explanation;

-According to Gay Lussac's Law of Combining Volumes when gases react, they do so in volumes which have a simple ratio to one another, and to the volume of the product formed if gaseous, provided the temperature and pressure remain constant.

-Thus; from the volume of nitrogen and oxygen gases; we have; 316 / 178 = 1.775 moles of nitrogen gas per mole of oxygen gas.

-Therefore, nitrogen gas is the limiting reactant, and for each mole of nitrogen gas used, we will get 1 mole of N2O. This means the resulting volume of N2O with 100% yield will be the same as the volume of nitrogen gas used, thus, 100% yield will produce 316 mL.

However, with 82% yield the volume would be; 316 × 82/100 =259 ml

Therefore; the volume of N2O at 82% yield will be 259 ml

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Gold rarely forms ions, unless under extreme conditions that are not present in the human body. Gold ions, when ingested, are actually very toxic, so gold poisoning is possible. But because gold are so rare, gold poisoning is also a rare phenomenon.
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stiks02 [169]

Answer:

Hydrogen Bonds Make Water Sticky

Explanation:

This sticking together of like substances is called cohesion. Depending on how attracted molecules of the same substance are to one another, the substance will be more or less cohesive. Hydrogen bonds cause water to be exceptionally attracted to each other. Therefore, water is very cohesive.

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