رد: Chemistry Study Group تجمع الطـالبات ~
بنات ممك مسااعدة في حل السؤال هذا
All of the substances listed below are fertilizers that contribute nitrogen to the soil.
Which of these is the richest source of nitrogen on a mass percentage basis?
Urea, (NH2)2CO
Ammonium nitrate, NH4NO3
Guanidine, HNC(NH2)2
Ammonia, NH3 هذا الجواب
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