Question

define molecular mass and calculate the molecular mass of glucose molecules

Answer 1

molecular mass of substance represent the number of times the molecule of that substance is heavier than 1/12th of the mass of an antim of C-12 isotopes .
molecular mass of glucose: C12H22O11
12 ×atomic mass of carbon+ 22× atomic mass of H+ 11× atomic mass of O .
12×12.0+22×1.0+11×16.0
=144+22+176
=342u

Answer 2

$\large{ \fbox{ \fbox{ \bold{ \: \: Molecular \: Mass \: \: }}}}$

➡Sum Of The Atomic Masses Of All The Atoms In A Molecule Of A Substance Is Called The Molecular Mass Of The Molecule

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$\bold{Molecular \: Formula \: Of \: Glucose \: Is \: C6H12O6 \: }$

$\bold{ \to \: Atomic \: Mass \: Of \: H = 1</p><p> \: } \\ \bold{ \to \: Atomic \: Mass \: Of \: C = 12 \: } \\ \bold{ \to \: Atomic \: Mass \: Of \: O = 16</p><p> \: }$

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$\implies \bold{Molecular \: Mass \: Of \: C6H12O6 = 12 × 1 + 6 × 12 + 6 × 16</p><p> \: } \\ \\ \implies\bold{Molecular \: Mass \: Of \: C6H12O6 = 12 + 72 + 96 </p><p>} \\ \\ \implies \: \bold{Molecular \: Mass \: Of \: C6H12O6 = 180 \: u \: }$