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OverLord2011 [107]
3 years ago
8

Wood burns in the presence of oxygen in the air and produces fire. After all the wood is burned, the fire stops. What is the exc

ess reactant?
Chemistry
1 answer:
worty [1.4K]3 years ago
4 0

Answer:

oxygen

Explanation:any reaction with burning involves mixing oxygen

this is correct

hope this helps plzz mark me brainliest  

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discuss the origin of the line citing the bohr theory of the atom specify any energy transitions that are applicable
xeze [42]

Answer:

Niels Bohr states that the line spectrum of the hydrogen atom by assuming that the electron revolve in circular paths and that the paths  have an allowable radii. ...

Explanation:

discuss the origin of the line citing the bohr theory of the atom specify any energy transitions that are applicable

Niels Bohr states that the line spectrum of the hydrogen atom by assuming that the electron revolve in circular orbits and that orbits have an allowable radii. ... an absorption spectrum is produced, dark lines in the same position as the bright lines in the emission spectrum of an element are produced.

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7 0
4 years ago
What is the difference between matter, mass, and volume?​
Serga [27]
<h2>The difference between matter, mass, and volume is that:</h2>

<u>Matter</u> is a physical substance which can be touched, seen, smelled, and sometimes heard. It comes in different states: liquid, solid, gas, and plasma.

<u>Mass</u> is the measure of how much <u>matter</u> is in an object.

<u>Volume</u> is the measure of how much space is inside of a 3D object.

7 0
3 years ago
A gas occupies a volume of 2.4 L at 14.1 kPa. What volume will the gas occupy at 84.6 kPa?
Naddik [55]

Answer:

  • <u>0.40 L</u>

Explanation:

Boyle's law for gases states that, at constant temperature, the volume and pressure of a fixed amount of gas are inversely related.

Mathematically, that is:

  • PV = constant

  • P₁V₁ = P₂V₂

Here, you have:

  • V₁ = 2.4 L
  • P₁ = 14.1 Kpa
  • P₂ = 84.6 KPa
  • V₂ = ?

Then, you can solve for V₂:

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Substitute and compute:

  • V₂ = 14.1 KPa × 2.4L / 84.6 KPa = 0.40 L ← answer
3 0
3 years ago
A company wants to sell more sports drinks so they decide to add more sugar. For Group A they
ycow [4]

Answer:

Group B

Explanation:

The control group of an experiment is considered to be the "normal" because it does not receive the expeiemental treatment and hence is used to compare with the experimental group. The control and experimental groups are similar in every other aspect with the exception of the "INDEPENDENT VARIABLE". The independent variable is not changed in the control group.

In this experiment, the control group is GROUP B, which was given a plain gatorade without adding sugar. Sugar is the independent variable here, and it was not included in GROUP B, meaning that GROUP B is the CONTROL GROUP. On the other hand, the experimental group is the GROUP A.

8 0
4 years ago
Please finish this <br> C3H8+5O2
stiks02 [169]

Answer:

Below.

Explanation:

This is the combustion of the hydrocarbon propane.

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6 0
3 years ago
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