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MrMuchimi
3 years ago
9

I'm sad to announce that this will most likely be my last day on brainly until next year, and to all the friends I've made on he

re from the last year, and to all the other people who've I've had amazing experiences with I would just like to say thank you.
This site has helped me greatly, and the majority of the people here on this platform are very helpful and friendly. I'll miss you all, and if I do return next year, I hope you all will be here too 。.:☆*:・'(*⌒―⌒*)))

- Eijiro <3
Chemistry
1 answer:
ohaa [14]3 years ago
3 0

Answer:

I know I never met you, but I'll miss you too. I hope you have a nice life. =)

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5 0
3 years ago
2) Calculate the percent composition of each element in Mgso,
iogann1982 [59]

Answer:

2)

\% Mg=20.2\%\\\\\% S=26.6\%\\\\\% O=53.2\%

3)

\% Ag=93.1\%\\\\\% O=6.9\%

Explanation:

Hello!

2) In this case, since magnesium sulfate is MgSO₄, we can see how magnesium weights 24.305 g/mol, sulfur 32.06 g/mol and oxygen 64.00 g/mol as there is one atom of magnesium as well as sulfur but four oxygen atoms for a total of g/mol; thus the percent compositions are:

\% Mg=\frac{24.305}{120.36 } *100\%=20.2\%\\\\\% S=\frac{32.06}{120.36 } *100\%=26.6\%\\\\\% O=\frac{64.00}{120.36 } *100\%=53.2\%

3) In this case, although the element seems to contain Ag and O, we infer its molecular formula is Ag₂O; thus, since we have two silver atoms weighing 215.74 g/mol and one oxygen atom weighing 16.00 g/mol for a total of 231.74 g/mol, we obtain the following percent compositions:

\% Ag=\frac{215.74}{231.74} *100\%=93.1\%\\\\\% O=\frac{16.00}{231.74} *100\%=6.9\%

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7 0
3 years ago
When a customer begins choking you should administer CPR.<br> True<br> False
yuradex [85]

Answer:

True

Explanation:

That's my answer :)

3 0
3 years ago
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How many atoms of silver are present in one mole of silver
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Answer:

The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023). Calculate the number of atoms in 2.45 mol of copper. A silver ring contains 1.1 x 1022 silver atoms.

Explanation:

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2 years ago
How is the word theory as it is used in science different from the common use of the word outside of science?
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