📅 NSB 2019🎓 HS🔄 Round 8#️⃣ Q21❓ TOSS-UP✍️ Short Answer
A balloon is inflated with 10 grams of helium. Under the same conditions, a second balloon is inflated to the same volume with nitrogen. To the nearest gram, what is the mass of nitrogen in the second balloon?
✔️Answer:70
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