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GenaCL600 [577]
3 years ago
15

What gas makes up the majority of the Earth's atmosphere?

Chemistry
1 answer:
Naya [18.7K]3 years ago
7 0

Answer:

Nitrogen and oxygen are by far the most common; dry air is composed of about 78% nitrogen (N 2) and about 21% oxygen (O 2).

In short, Nitrogen

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What is the h2 h2o molar ratio??
lara31 [8.8K]
2molH2: 1molO2:2molH2O
6 0
3 years ago
Twenty molecules of tetrasulfur tetranitrogen contain how many atoms of sulfur?
viva [34]
The correct answer is 80 atoms of sulfur.

In order to answer this question we must firstly find the molecular formula of tetrasulfur tetranitrogen. The said molecule has the molecular formula of S4N4.
Therefore, each molecule of S4N4 contains four atoms of sulfur (S).
If one molecule of S4N4 contains 4 sulfur atoms, then twenty molecules contain 
20 x 4= 80 atoms of sulfur.

7 0
3 years ago
Identify the examples of diffusion in the list below. Check all that apply.
Fynjy0 [20]

Answer;

  • A teacher takes the cap off a permanent marker. A few minutes later, students at the back of the classroom complain about the odor of the marker.
  • A cooking school student burns a piece of toast. Soon, the entire kitchen smells like burnt toast.
  • Toxic fumes produced by a chemical factory are detected in the air in a town several miles away.
<h3><u>Explanation;</u></h3>
  • Diffusion is a type of passive transport that involves the movement of particles from a region of high concentration to a region of low concentration.
  • <em><u>Diffusion takes place in liquids and gases, since their particles can move randomly from one region to another.</u></em>
  • <em><u>Therefore, diffusion results from the random movement of particles in which the net movement is down the concentration gradient  that is, from a region of high concentration to a region of low concentration.</u></em>
4 0
4 years ago
Read 2 more answers
Write a full set of quantum numbers for the following:
Troyanec [42]

Explanation:

It is known that the maximum value of ml is equal to the vale of l. But the minimum value of n is as follows.

                    n = l + 1

where,     n = principle quantum number  

                l = azimuthal quantum number

Values of n can be 1, 2, 3, 4 and so on. Whereas the values of l is 0 for s, 1 for p, 2 for d, 3 for f, and so on.

Also, "m" is known as magnetic quantum number whose values can be equal to -l and +l.

  • Electronic configuration of Li is 1s^{2}2s^{1}. So here, n = 2, l = 0, m = 0 and s = ± \frac{1}{2}.
  • Electronic configuration of Br^{-} is [Ar]3d^{10}4s^{2}4p^{6}&#10;. So here, n = 4, l = 1, m = -1, 0, +1, and s = ± \frac{1}{2}.
  • Electronic configuration of Cs^{+} is [Kr]4d^{10}5s^{2}5p^{6}. So here, n = 5, l = 1, m =  -1, 0, +1, and s = ± \frac{1}{2}.
  • Electronic configuration of B is 1s^{2}2s^{2}2p^{1}. So here, n = 2, l = 1, m = -1, 0, +1, and s = ± \frac{1}{2}.
5 0
3 years ago
Is Bromine from the noble gasses? if yes why? if no why? too​
Jet001 [13]

Answer: Bromine is Actually a Halogen!

Explanation: Bromine is in the 7th column of the Periodic Table. It needs that magic 8 valence electrons and it has 7.

Hoped that helped!

8 0
4 years ago
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