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OpenStudy (anonymous):

What is the mass in grams of 2.15 moles of oxygen atoms?

OpenStudy (anonymous):

6.02. 10^23. I think, i'm not sure though

OpenStudy (joannablackwelder):

2.15 moles of oxygen atoms *(15994 g/1 mol)= ? g of oxygen atoms This is using molar mass of oxygen atoms to cancel out moles and you are left with grams.

OpenStudy (anonymous):

http://wiki.answers.com/Q/What_is_the_mass_of_2.50_moles_of_oxygen_gas?#slide=2 A example for you . that might help you :)

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