How many atoms of Na are there in 0.17 moles of Na

Explanation:

The number of atoms in a substance can be found by using the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 0.17 × 6.02 × 10²³

We have the final answer as

Hope this helps you

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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the answer is option a.