How many liters of NH are needed to react completely with 30.0 L of NO (at STP)? Chemistry How many liters of NH are needed to react completely with 30.0 L of NO (at STP)? 4NH3 (g) + 6NO(g) ? 5N2 (g) + 6H2 O(g) a. 5.0 L b. 20.0 L c. 7.5 L d. 120.0 Answer: B Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+