Homework Help: Chemistry

Posted by Niki on Monday, October 13, 2008 at 4:41pm.

When 34.5 L ammonia and 39.5 L oxygen gas at STP burn, nitrogen monoxide and water are produced. After the products return to STP, how many grams of nitrogen monoxide are present?
4NH3+5O2->4NO+6H2O

Chemistry - bobpursley, Monday, October 13, 2008 at 4:58pm
Lets check to see if there is a limiting reageant.

Four volumes of ammonia, five volumes of O2
5/4 *34.5=43 L O2, so there is not enough oxygen.
4/5*39.5=31.6 L of ammonia are reacted.
Liters of NO produced: 31.6L NO
moles: 31.6/22.4
You figure the grams.

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