Question

1. Calculatethenumberofmolesofcarbonatomsandhydrogenatominthreemolesofethane.​

Answer 1

Answer:

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Explanation:

1 molecule of ethane contains 2 carbon atoms 

so 3 moles of ethane contains 6 mole of carbon atoms.

1 molecule of ethane contains 6 hydrogen atoms 

so 3 moles of ethane contains 18 mole of hydrogen atoms.

1 mole of ethane contains 6.023×10²³ molecules of ethane

so 3 mole of ethane contains 3×6.023×10²³ =18.069 ×10²³ molecules of ethane

Answer 2

Answer:Answer

(i) There are two atoms of Carbon in each C2H6 molecules hence 1 mole of C2H6 will have 2 moles of carbon atoms. So that Number of moles of carbon atoms in 3 moles of C2H6 = 2 × 3 = 6 moles

(ii) There are six atoms of hydrogen in each molecules of C2H6 hence 1 mole of C2H6 will have 6 moles of hydrogen atoms. So that Number of moles of carbon atoms in 3 moles of C2H6 = 3 × 6 = 18 moles

(iii) Each mole of any substance has 6.023 × 1023 particles so that 3 mol of C2H6

will have = 3 × 6.023 × 1023 = 18.069 × 1023 molecules.

Explanation: