1. mO2 = 0.15*32=4.8 g
mNaOH = 0.4*40=16 g
2. nHCl = 7.3/36.5=0.2 mol
3. MM= m/n = 11.5/0.5 = 23 (g/mol)
1.
m\(O_2\) = n.M = 0,15.32 = 4,8 g
mNaOH = n.M = 0,4.40 = 16g
2.
nHCl = \(\frac{m}{M}\)= \(\frac{7,3}{36,5}\) = 0,2 mol
3.
MM = \(\frac{m}{n}\) = \(\frac{11,5}{0,5}\) = 23 g/mol