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Klio2033 [76]
3 years ago
6

A sample of carbon 12 has a mass. Of 6.00g how many atoms of carbon 12 are in the sample

Chemistry
1 answer:
Neko [114]3 years ago
7 0
The number of atoms = number of moles x Avogadro’s number (6.022x10^23)

So first you need to find the number of moles of carbon 12

Number of moles = mass (g)/ molar mass

n= 6/12
= 0.5

Then put that into the equation for number of atoms so
Number of atoms = 0.5 x 6.022 x 10^23
= 3.011x10^23

I’m not 100% sure if that’s correct though
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How many grams are in 3.14 x 1015 molecules of CO?
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Explanation:

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1 mol of CO has a mass of

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1 mol of molecules = 6.02 * 10^23

x mol of molecules = 3.14 * 10^15        Cross multiply

6.02*10^23 x = 1 * 3.14 * 10^15             Divide by 6.02*10^23

x = 3.14*10^15 / 6.02*10^23

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