How do I assign the values in my vector to their respective variables in the equation?

% A script that calculates the vapor pressures for pure components at
% different temperatures using the Antoine equation.
% Script will find Psat in units of mmHg (p_mmHg)

% Check that we are in the range of applicability
%Calculating log Psat with Psat in mmHg
Antoine = zeros(1,length(t_C)-1);
for t_C = 1:10:100
(a;b;c) = [6.9038, 1163.03, 227.4; 6.84498, 1203.526, 222.863; 7.09808, 1238.71, 217; 7.87863, 1473.11, 230; 6.90240, 1268.115, 216.9];
log_p_mmHg(Antoine) = a-b/(t_C+c);
end
%Psat in mmHg
p_mmHg = 10.^log_p_mmHg

Answer 1

[Star Strider]

Taking a wild guess, perhaps something olike this (assuming that ‘a’ is the first matrix column, etc.) —

Mabc = [6.9038, 1163.03, 227.4; 6.84498, 1203.526, 222.863; 7.09808, 1238.71, 217; 7.87863, 1473.11, 230; 6.90240, 1268.115, 216.9];
t_C = linspace(1, 100, size(Mabc,1));
for k = 1:numel(t_C) 
    log_p_mmHg(k) = Mabc(k,1)-Mabc(k,2)./(t_C(k)+Mabc(k,3)); 
end

figure
plot(t_C, log_p_mmHg)
grid
xlabel('t_C')
ylabel('log(p) mmHg')

The dimensions must match.

.