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gtnhenbr [62]
3 years ago
11

Which pair of elements do you expect to be most similar in their chemical properties?

Chemistry
1 answer:
Dmitry [639]3 years ago
7 0
Isotopes of carbon or any element
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What is another name for groups of elements?
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They are called groups or family. Hope this helps 
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A microwave operates at 7.42 mm wavelength. How much energy is produced in Joules from 359 photons?
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Answer:

E=9.62\times 10^{-21}\ J

Explanation:

Given that,

The wavelength of a microwave is 7.42 mm or 0.00742 m

No. of photons, n = 359

We need to find the energy produced by this no of photons. It can be given by the formula as follows :

E=\dfrac{nhc}{\lambda}\\\\E=\dfrac{359\times 6.63\times 10^{-34}\times 3\times 10^8}{0.00742}\\\\=9.62\times 10^{-21}\ J

or

E=9.62e^{-21}\ J

So, the required energy is 9.62\times 10^{-21}\ J.

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3 years ago
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Does graphite dissolve in cyclohexane
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Answer:   Graphite is nonpolar carbon which associates with the nonpolar hexanes. The cellulose in the exposed paper contains polar regions that are attracted to the polar water.

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2 years ago
Solid aluminum reacts with solid lodine to.<br> produce solid aluminum iodide.
Step2247 [10]

Answer:

After the arrow, usually the right. Balance NO+O2--->NO2. 2NO+O2--->2NO2 ... What is the symbol for "solid"? (s). 3Mg3 (PO4)2.

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3 years ago
Isotopes (such as hydrogen-1, hydrogen-2, and hydrogen-3) are atoms of the same
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Answer:

a. The number of neutrons in the nucleus

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Hope this helps!

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