Question

calculate the mass of 1) 3.011 x 10¹² atoms of O
2)6.022 x 10²³ molecules of O​

Answer 1

Answer:

i)1 mole of oxygen gas = 32 GM

0.5 mole = 32/2 = 16 gm

ii)given no. particles/ Avogadro's number = moles

1/2moles of oxygen = 16/2 = 8 gm

iii )given no. particles/ Avogadro's number = moles

1 mole = 16 gm.

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