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This is the chemical formula for talc ( the main ingredient in talcum powder ) : M g 3 ( S i 2 O 5

This is the chemical formula for talc (the main ingredient in talcum powder):
Mg3(Si2O5)2(OH)2
An analytical chemist has determined by measurements that there are 0.0223 moles of silicon in a sample of talc. How many moles of hydrogen are in the sample?
Round your answer to 3 significant digits.
10
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