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Maslowich
3 years ago
12

What does the thumping on the chest signal mean?

Chemistry
2 answers:
ankoles [38]3 years ago
3 0
It means that you are the brother or friend of the person doing the thumping
Olegator [25]3 years ago
3 0
It means that you are someone close to the person doing the thumping.
Hope this helps!
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How many valance electrons does group #11 have?
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It would have 11 valance electrons.

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Say we are talking about groups 10. Group 10 would have 10 valance electrons because of the atom's electronic arrangement in the periodic table.

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The longer it takes to orbit the sun.

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A centimeter and millimeter differ from each other by a factor of _____ ?
Liono4ka [1.6K]



The answer is:  "10" .
_______________________________________________________________
  " A centimeter and millimeter differ from each other by a factor of "10" .
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7 0
3 years ago
I NEED HELP PLEASE, THANKS! :)
marin [14]

Answer:

\large \boxed{1.447 \times 10^{23}\text{ molecules Cu(OH)}_{2 }}

Explanation:

1. Calculate the moles of copper(II) hydroxide

\text{Moles of Cu(OH)}_{2} = \text{23.45 g Cu(OH)}_{2} \times \dfrac{\text{1 mol Cu(OH)}_{2}}{\text{97.562 g Cu(OH)}_{2}} = \\\\\text{0.240 36 mol Cu(OH)}_{2}

2. Calculate the molecules of copper(II) hydroxide

\text{No. of molecules} = \text{0.240 36 mol Cu(OH)}_{2} \times \dfrac{6.022 \times 10^{23}\text{ molecules Cu(OH)}_{2}}{\text{1 mol Cu(OH)}_{2}}\\\\= 1.447 \times 10^{23}\text{ molecules Cu(OH)}_{2}\\\text{The sample contains $\large \boxed{\mathbf{1.447 \times 10^{23}}\textbf{ molecules Cu(OH)}_{\mathbf{2}}}$}

6 0
3 years ago
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