Task 20200.

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How many molecules contained in 0.2kg of nitrogen (N2) (molar mass of nitrogen 2.8 x 10 -2 kg / mol)?

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.

If you have any questions to address, please. I´ll try to help.

11.04.2015 19:03:10

и где ваша задача... :)

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