A sample of vitamin c is known to contain 2.58 x 10^{24 oxygen atoms. How many moles of oxygen atoms are present in the sample?}
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Solution

6.023 x 10²³ atoms of oxygen = 1 mole oxygen atom
therefore 2.58 x 10²⁴ atoms of oxygen = 2.58 x 10²⁴ /6.023 x 10²³ = 25.8 x 10²³/6.023 x 10^{23 =}4.28 moles of oxygen atom

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A sample of vitamin c is known to contain 2.58 x 1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?srisaji@yahoo.com

6.023 x 1023 atoms of oxygen = 1 mole oxygen atomtherefore 2.58 x 1024 atoms of oxygen = 2.58 x 1024 /6.023 x 1023 = 25.8 x 1023/ 6.023 x 1023 = 4.28 moles of oxygen atom

A sample of vitamin c is known to contain 2.58 x 10^{24 oxygen atoms. How many moles of oxygen atoms are present in the sample?}
^{srisaji@yahoo.com}

6.023 x 10²³ atoms of oxygen = 1 mole oxygen atom
therefore 2.58 x 10²⁴ atoms of oxygen = 2.58 x 10²⁴ /6.023 x 10²³ = 25.8 x 10²³/6.023 x 10^{23 =}4.28 moles of oxygen atom