Manganese metal can be prepared by the thermite process:


4Al(s)

+

3MnO2(s)

→
3Mn(l)

+

2Al2O3(s)


If 175 g of Al and 472 g of MnO2 are mixed, how many moles of Mn could be produced from the reaction?

Relative Atomic Mass Data: Ca = 40; Mn = 55; I = 127; Li = 7; Ag = 108; Al = 27; Na = 23; H = 1; K = 39; Br = 80; N =14; O =16; Cl = 35