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Volgvan
3 years ago
12

a) A table tennis ball has been hit is about 13.16 times as fast as the speed for the swimming. What is the speed of the table t

ennis ball?
Chemistry
1 answer:
Alex3 years ago
7 0

x=swimming

The answer is X*13.16

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What do The seven dots around fluorine represent
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The seven dots around flourine are the valence electrons
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49.86 × 10²³  atoms of Al

Explanation:

Given data:

Number of moles of Al = 8.28 mol

Number of atoms = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

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8.28 mol×6.022 × 10²³  atoms / 1mol

49.86 × 10²³  atoms of Al

4 0
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