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28-02-2021
Chemistry

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How many grams do 1.8 x 1020 atoms of phos- phorus weight

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28-02-2021

Answer:

9.2 x 10⁻³ grams

Explanation:

1mole P = 6.02 x 10²³ atoms

So, no. moles in 1.8 x 10²⁰ atoms P = 1.8 x 10²⁰ / 6.02 x 10²³atoms/mole = 2.99 x 10⁻⁴ mole

Grams P = moles x formula weight of P = 2.99 x 10⁻⁴ mole x 30.9738 g/mole = 9.26 x 10⁻³ grams P

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