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posted by Kim on Thursday, October 28, 2010 at 11:21pm.

1.25 g of HClo3 has_____________ molecules (how many) ?

HClO3 is how many moles. moles = g/molar mass. Then 1 mole of HClO3 contains 6.022E23 molecules.

0.575 moles of Al2(SO4)3 has -------moles of Al3+ ions

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