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Calculate the number of moles in 7.4g ca(oh)2

User Phyllis
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first find the RFM (Relative Formula Mass) using a periodic table
the RFM of Ca(OH)2 is = 74

then use the equation Moles = Mass / RFM

Moles = 7.4 / 74 = 0.1mol

hope that helps
User Sohan Vanani
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