Homework Help: biology

Posted by muffy on Thursday, September 10, 2009 at 3:43pm.

Please help. Can you tell me how to find

1. what is the weight of 1 mole of pure sodium (Na)?

2. How many molecules of Na are in 1 mole of Na?

biology - bobpursley, Thursday, September 10, 2009 at 3:50pm
one mole of Na? isn't it 22.98976928 grams? The mass of a mole of any element is equal to its atomic mass, in grams.

Sodium doesn't form molecules, just atoms when alone. 6.02 x 10^23 atoms will be in one mole of sodium.

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