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nika2105 [10]
3 years ago
11

Determine the number of atoms in a 48.3-g sample of zinc. express your answer in zinc atoms using scientific notation.

Chemistry
1 answer:
Paladinen [302]3 years ago
8 0
To answer this question, you need to know the molecular weight of zinc so you can determine how many mol zinc you have. Zinc molecular weight is 65.38gram/mol. Then the calculation would be: 48.3gram/(<span>65.38gram/mol)= 0.74 mol

Since you are asked the amount of atom, you need to multiply the unit in mole with Avogadro number. The calculation should be: 0.74 * 6.02 * 10^23= 4.45* 10^23 molecules</span>
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Answer: The final concentration of aluminum cation is 0.335 M.

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Given: V_{1} = 47.8 mL (1 mL = 0.001 L) = 0.0478 L

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