In a commercial process that produced ammonia, the theoretical yield of NH3 was found to be 150 grams. When the process was carried out, the actual yield was 135 grams. What was the percent yield ?

Answer 1

The percent yield is the actual yield divided by the theoretical yield (x100%). Think of it this way...

If you are supposed to get $100 (theoretical) but you only get $60 (actual), you got only 60% yield.

%yield = 135 g / 150 g (x100%) = 90%