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anastassius [24]
3 years ago
7

What is the charge of Fe2O3

Chemistry
1 answer:
aalyn [17]3 years ago
8 0
ANSWER: +3 is the charge
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The quinine in tonic water shines a strange blue-white colour when lit with UV light. Explain what is happening here.
Alecsey [184]

Answer:

Here's what I get.

Explanation:

Quinine contains phosphors, substances that glow when they are hit with certain wavelengths of light.

The phosphors in quinine absorb UV light, which is invisible to our eyes.

Electrons in the phosphors absorb the UV energy and are excited to higher energy levels.

When the electrons drop back to lower energy levels, they emit some of this energy as a glowing blue visible light.  

5 0
3 years ago
Ordered: 0.3 gm. Available: 300 mg/tablet. How many tablets should be given?
dimulka [17.4K]

Answer:

1 tablet

Explanation:

Assuming that gm stands for gram:

Put everything in one unit, 0.3 g = 300 mg.

And given that each tablet is 300 mg:

mass/amount = 300mg / 1 tablet

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(300mg/300mg) tablet = X = 1 tablet

So it is 1 tablet you need.

4 0
2 years ago
1-Propynyllithium reacts with (R,R)-2,3-dimethyloxacyclopropane in a stereoselective reaction. Draw a curved arrow mechanism and
QveST [7]

Answer:

Reference image attached

Explanation:

Please see the attached image.

6 0
3 years ago
How did your estimated poputation size<br> compare with the actual population size
musickatia [10]

Answer:

Hope this helps

Explanation:

https://seagrant.whoi.edu/wp-content/uploads/2018/05/ESTIMATING-POPULATION-SIZE-1.pdf

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What describes a mixture
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