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3 years ago

11. Calculate the number of atoms in 2.00g of platinum.

Chemistry

2 answers:

Serggg [28]3 years ago

7 0

Answer:

Explanation:

All you need to know is the atomic mass of platinum, and Avogadro's number.

2.00g Pt divided by atomic mass gives you the moles of platinum, and multiplying by avogadro's number (6.022 x 10^23) gives you the number of atoms.

Atomic mass of platinum can be found on any periodic table.

Hope this helped.

pochemuha3 years ago

5 0

Here’s the answer I think?

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3 years ago

a 10.99g sample of NaBr contains 22.34% Na by mass. Considering the law of constant composition (define proportions), how many g

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Given :

A 10.99 g sample of NaBr contains 22.34% Na by mass.

To Find :

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