qqp question1: How can I draw graphs of equations quickly in Math? question2: Ammonia: I have Ammonium Hydroxide Solution with concentration of about [math]28\%\ \require{mhchem}\ce{NH3}[/math] in [math]\ce{H2O}[/math], how can I calculate the concentration of [math]\ce{NH4+}[/math] in this solution?