Question #80bdd

1 Answer
Ayako_Sho
Feb 18, 2016

If you mean Ca and the charge on it 2+, then look at this, you only need the Ca here okay? forget the 2+, charge doesn't matter, subscripts and coefficients do
And as for your question, its very simple
The number of moles = #Mass//Molar Mass#
But you havent given enough information, I need a given mass

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