📅 NSB Round Robin 2012🎓 HS🔄 Round 2#️⃣ Question 9 TOSS UP✍️ Short Answer
If a water heater uses 20 cubic feet of natural gas in 30 minutes and natural gas contains 1,000 Btus [B-T-USE] per cubic foot, what is the hourly input rating of the water heater in Btu per hour?
✔️Answer:40,000
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