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anonymous
 4 years ago
what is the mass in grams of 2.90x10^12 lead (Pb) in atoms ?
anonymous
 4 years ago
what is the mass in grams of 2.90x10^12 lead (Pb) in atoms ?

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Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1What is the atomic weight of Pb?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1\[2.90\times 10^{12}atoms Pb \times\frac{1 mole Pb}{6.023\times 10^{23}atoms Pb}\times\frac{207.2 g Pb}{1 mole Pb}\]

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1I think that works out to 9.98 x10^10

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0how do you figure out the correct scientific notation ?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1I just plug it into my calculator

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1But if you can't do that then do this:

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1\[\frac{2.90(207.2)}{6.023}=99.8\]

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Now we must do the powers of 10

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1\[\frac{10^{12}}{10^{23}}=10^{11}\]

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1So now we have: \[99.8\times 10^{11}\]

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1And we need to put that into scientific notation. Can you do that?
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