Question

which one of the following does not represent molar mass of a substance?
a)1 mole of HCL
b)6.023×10^23 molecules of helium
c)16g of O2
d)44g of CO2​

Answer 1

Answer:

b = 6.023*10^23 molecules of helium

Answer 2

Answer:

16g of oxygen does not represent the molar mass of a substance i.e.option(c).

Explanation:

• The idea of a mole is also extended to molar mass.
• Additionally, it connects the number of particles with the macroscopic unit of mass. The mass of a material for a given amount of a substance is defined by its molar mass.
• The mass of the substance divided by the quantity of the material can be used to calculate it (in moles).
• A typical oxygen molecule weighs 32 amu or such. An oxygen molecule weighs 32 per gram of molecular mass. Atomic oxygen has a molecular weight of 16g. This definition of molar mass is inaccurate when expressed in terms of 16g of oxygen.

So, 16g of oxygen does not represent the molar mass of a substance i.e.option(c).

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