Obtain the moles of substances in the fo...

Obtain the moles of substances in the following.
a. 3.43 g of C b. 7.05 g `Br_2`
c. 76 g `C_4H_(10)` d. 35.4 g `Li_2 CO_3`
e. 2.57 g As f. 7.83 g `P_4`
`41.4 g N_2H_4` h. 153 g `Al_2(SO_4)_3`

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