I think this question is a true statement :)
The answer is (3) 53.5 g/mol. The gram formula mass means that the mass of one mol compound. 1N=14, 4H=4, 1Cl=35.5. So the gram formula mass of NH4Cl=14+4+35.5=53.5 g/mol.
The correct answer is C the suns energy from the earth
Pulmonary ventilation, and carbonic acid-bicarbonate buffering system