(Answered) A balloon has a volume of 292 ml and contains 00201 mol of

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A balloon has a volume of 292 mL and contains 0.0201 mol of CO₂. What mass of N₂ must be added to expand the balloon to 357 mL? (Assume constant temperature and pressure.)

Not sure how to go about this. Am I on the right path, is it correct so far?

V1 = V2

n1 n2

292 = 357

.0201 n2

40.69 mol then convert to grams? How?

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