Calculate the number of particles of the following
(a) 7 mole of He
(b) 31g of P4 molecules
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Answer:
Answer:
no. of particles = no. of moles × 6.0 × 10²³
no. of moles = Mass / Molecular mass
= 31 / 124
= 0.25
no. of particles = 0.25 × 6 × 10²³
= 1.5 × 10²³
Explanation:
Particles
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