Question

10²¹ molecules are removed from 200 mg of CO₂. The moles of
CO₂ left are :
(a) 2.88 ×10⁻³ (b) 28.8×10⁻³
(c) 288×10⁻³ (d) 28.8×10³

Answer 1

Explanation:

10²¹ molecules are removed from 200 mg of CO₂. The moles of

CO₂ left are :

(a) 2.88 ×10⁻³

(b) 28.8×10⁻³

(c) 288×10⁻³✔️✔️

(d) 28.8×10³

Answer 2

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(c) 288×10⁻³

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