how to find the molar enthalpy of an object in matlab

main.m
% Define the substance object
classdef Substance
    properties
        m % mass of substance
        Cp % heat capacity
        T1 % initial temperature
        T2 % final temperature
        mm % molar mass
    end
    methods
        function obj = Substance(m, Cp, T1, T2, mm)
            obj.m = m;
            obj.Cp = Cp;
            obj.T1 = T1;
            obj.T2 = T2;
            obj.mm = mm;
        end
        function n = moles(obj)
            n = obj.m / obj.mm;
        end
        function DeltaH = enthalpy(obj)
            DeltaH = obj.Cp * (obj.T2 - obj.T1);
        end
        function Hm = molarEnthalpy(obj)
            n = obj.moles();
            H = obj.enthalpy();
            Hm = H / n;
        end
    end
end

% Define substance properties
m = 10; % grams
Cp = 4.18; % J/gK
T1 = 298; % K
T2 = 323; % K
mm = 18.015; % g/mol

% Create substance object
water = Substance(m, Cp, T1, T2, mm);

% Calculate molar enthalpy
Hm = water.molarEnthalpy();
display(Hm);
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