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N2+3h3=2nh3. how many grams of hydrogen would be required to react with 14.0 g of nitrogen. please show work? What is the magnitude of the average force required to stop an 1400 kg car in 8.0 s if the car is traveling at 85 km/h ? 2Na (s) + 2 H2O (l) → 2NaOH (aq) + H2 (g) If 4.52 moles of Na react with an excess of water, how many grams of H2 are formed? Any math help please? are these right? What is 115 divided by 12?