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NeX [460]
4 years ago
8

How many atoms are in a sample of 175 grams of sodium (na)? 1.42 × 10^27 atoms 4.58 × 10^24 atoms 6.68 × 10^-21 atoms 1.26 × 10^

-23 atoms
Chemistry
1 answer:
Alenkasestr [34]4 years ago
5 0
Atomic mass Na = 22.99 u.m.a

22.99 g ------------------ 6.02x10²³ atoms
175 g -------------------- ?? atoms

175 x (6.02x10²³) / 22.99 => 4.58x10²⁴ atoms

hope this helps!
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Explanation:

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<em>Total moles: 12</em>

Hydrogens in sample C are:

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<em />

Thus, right answer is:

<em>E) All three samples have the same number of hydrogen atoms</em>

<em></em>

I hope it helps!

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