Chemistry, asked by desichora1, 1 year ago

The number of oxygen atoms in 4.4g of O2 is???

Answers

Answered by Anonymous

Hii..

➡️ Moles = Given mass / Molar mass

➡️ Moles of O2 = 4.4 / 32 = 44/320 = 11/80 moles

➡️ No. of atoms = Moles × Avogadro's no.

=> No. of O2 atom = 11/80 × 6.022× 10^23

i.e. 0.82 × 10^23 moles ...or 82 × 10^21 moles.

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hope this helps :)

desichora1: Molar mass of O2 is 32 not 44

desichora1: ??

Anonymous: yes ... molar mass of O2 is 32 g

Anonymous: and molar mass of CO2 is 44

desichora1: why you have taken Co2 here??

Anonymous: i haven't taken CO2 dude..

desichora1: Why you have taken 44??

desichora1: & you have find no. of O2 molecules in 4.4 g not no. of atoms?

Anonymous: bro that's 4.4 ➡️ given mass

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