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### What is the mass, in kilograms, of an Avogadro's …

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Problem 32

Without doing any detailed calculations (but using a periodic table to give atomic weights, rank the following samples in order of increasing numbers of atoms: 42 gof NaHCO $_{3}, 1.5 \mathrm{mol} \mathrm{CO}_{2}, 6.0 \times 10^{24} \mathrm{Ne}$ atoms.

So if we now look at what we simplified them down to, it is easy to rank the samples in order of increasing
numbers of atoms:
NaHCO3 has less atoms than CO2 which has less atoms than the sample of Ne

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