Answer
0.417 M
Work Step by Step
Molarity=$ \frac{Number\,of\,moles\,of\,solute}{Volume\, of\, solution\,in\,L}=\frac{\frac{Mass\,of\,glucose}{Molar\,mass}}{Volume\,of\, solution\,in\,L}$
$=\frac{\frac{28.4g}{180.\,g/mol}}{0.378L}=0.417\,M$
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