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Flauer [41]
3 years ago
13

I NEED HELP PLEASE, THANKS! :)

Chemistry
1 answer:
vaieri [72.5K]3 years ago
8 0

Answer:

This process is known as doping. It can be done by adding either of two types of impurity to the crystal.

(A) By adding electron rich impurities i.e., group 15 elements to the silicon and germanium of group 14 elements.

hope it's helpful

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This planet has water in liquid, gas, and solid forms.
mart [117]

Answer:

earth

Explanation:

water vapor, water, ice

6 0
3 years ago
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A scientist would like to make 450.0 mL of a 0.0200 M HCl by diluting a 7.00 M HCl solution. What volume of the 7.00 M HCl solut
bagirrra123 [75]
450.0 ML because it has more solution and it would be better if the sciences users it
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A sealed beaker of what you are told is aqueous nickel sulfide was given to you by the local chemist and you put it on the windo
Contact [7]
Answer is: the nature of the initial nickel sulfide mixture is a suspension.
Suspension<span> is a </span>heterogeneous mixture (solute<span> particles do not </span>dissolve), <span>that contains </span>solid<span> particles (in this example nickel sulfide or NiS) sufficiently large for </span>sedimentation. <span> The internal phase (solid nickel sulfide) is dispersed throughout the external phase (water).</span>

8 0
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34 atoms of carbon react with 22 molecules of hydrogen gas. How many molecules of methane will be formed &amp; what will be left
pychu [463]
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5 0
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Calculate the moles of SO2 that contains 3.8 moles of O atoms
Olegator [25]
Answer: 1.9 moles SO₂

Explanation:

1) The chemical formula SO₂ shows that for every mol of SO₂ there are 1 mol of S and two moles of O.

2) Then you can state the proportion between the number of moles of SO₂ and O to find how many moles of SO₂:contains 3.8 moles of O.


   1 mol SO₂                         x

-------------------- =   --------------------------

    2 moles O              3.8  moles O


3) Now, you can clear x:

x = 3.8 moles O × 1 mol SO₂ / 2 moles O.

x = 1.9 moles SO₂.
5 0
3 years ago
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