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motikmotik
3 years ago
10

3.25 x 10+8 nm2 divide by 6.5 x 10+6 nm =

Chemistry
1 answer:
Vesnalui [34]3 years ago
8 0

Answer:  50 nm

Explanation:  Two steps:

1.  Divide 3.25/6.5 = 0.5

2.  Divide 10^8/10^6 = 10^2

nm^2/nm = nm

Combine:  0.5x10^2 nm

or 50 nm

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Answer:

19.264×10^{23} atoms are present in 3.2 moles of carbon.

Explanation:

It is known that one mole of each element is composed of Avagadro's number of atoms. This is same for all the elements in the periodic table.

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It is as simple as understanding a dozen of anything is equal to 12 pieces of that object.

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1 mole of carbon = 6.02 ×10^{23} atoms

Then, 3.20 moles of carbon = 3.20 × 6.02 ×10^{23} atoms

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