What is the difference between the mass of a molecule and gram molecular mass?

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Solution

Mass of a molecule is the actual mass of a single molecule expressed in grams whereas gram molecular mass is the mass in gram of Avogadro's number of molecules.

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Similar questions

Q. What is the difference between molecular mass and empirical mass? Explain with the help of hydrogen peroxide molecule.

Q. (a) What is the difference between an atom and a molecule?

(b) Define relative molecular mass.

Q. (a) What is the mass of one molecule of

H_{2} {S O}_{4}

? (b) What is the molecular mass of

H_{2} {S O}_{4}

? (c) What is the gram molecular mass of

H_{2} {S O}_{4}

Q. (a) Calculate the gram molecular mass of water from the values of gram atomic mass of hydrogen and of oxygen.
Gram atomic mass of hydrogen

= 1 g

Gram atomic mass of oxygen

= 16 g

(b) Atoms and molecules are the building blocks of matter. List out any three differences between them.

Gram Atomic mass is just the atomic mass expressed in grams ...ie, atomic mass with gram as units. Our book says that gram atomic mass and gram atom are the same thing (similarly for gram molecule and gram molecular mass) . But later a formula is given that : Gram atom = mass in grams / Atomic mass [RAM].

There are questions also that use this formula ( similarly for gram molecule) in which we have to find the number of "gram atoms " in a given mass of substance.

So what is the real meaning of gram atom and the formula ( and is is similar for gram molecules) ?

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