дано
m(HCL) = 50 g
m(NaOH) = 40 g
----------------------
m(NaCL)-/
M(HCL) = 36.5 g/mol
n(NHCL) = m/M = 50 / 36.5 = 1.37 mol
M(NaOH) = 40 g/mol
n(NaOH) = m/M = 40/40 = 1 mol
n(HCL) > n(NaOH)
HCL+NaOH-->NaCL+H2O
n(NaOH) = n(NaCL) = 1 mol
M(NaCL) = 58.5 g/mol
m(NaCL) =n*M = 1*58.5 = 58.5 g
ответ 58.5 г