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anonymous
 one year ago
Calculate the number of moles of helium that contains 3.25 x 10^21 atoms.
anonymous
 one year ago
Calculate the number of moles of helium that contains 3.25 x 10^21 atoms.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Without numbers, can you figure this out. Always start with given value \[\frac{ atoms}{ 1}\times \frac{ mol }{ atoms }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.03.25 x 10^ 21 atom x (1mol/6.022 x 10 23 atom)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[3.25 x 10^{21} atom x \frac{ 1 mol }{ 6.022 x 10^{23} atom }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, that is right. Sorry I was helping someone.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And I get .539687811

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Units would be in moles of helium.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So .539687811 mol He?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It has to be 3 sf since the given value only has 3. Remember that your answer has a 0 in the front. It does not count as a sf.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It's saying the answer is wrong. I did it right...Right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I did not do the calculations since you got the right conversion. You did the calculation. Do the calculation again.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think you put 3.25*10^23 instead of 3.25*10^21

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I did it again and got the same answer.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Write down what you calculate then.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[3.25\times10^{21} atomtimes \frac{ 1mol }{ 6.022 \times10^{23 } }atom\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Dont forget parentheses. (3.25*10^21)/(6.022*10^23)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So what did you do wrong earlier?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Forgot parentheses or wrong exponent?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I put it in the calculator without parentheses

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Another way is multiply 3.25*10^21 and lets called that x then multiply 6.023*10^23 and call that y. Then just do x/y if you arent comfortable with parentheses.
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