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Balance each of the following equations by adding the correct coefficient where required: (3 each) a

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Balance each of the following equations by adding the correct coefficient where required: (3 each) a. _2_Li(s) + _2_H2Om)-> _2_LiOH(aq) + _2_Hz(g) b. _4_Fe(s) + 3_O2(g) > _2_FezO3(5) C. _ Nag) + 3_H2(g) > _2_NH3(g) d. _CaC2(s) + _2_H,Om) > _ Ca(OH)2(s) + _ C2H2(g) e. SiCl4(s) + _2_H20() 7 _ SiO2(s) + _4_ HCI(aq) f. Zn(s) + _2_ HCl(aq) + > _ZnCl2(aq) + _ H2(g) g. Pb(NO3)2(s) + _2_KI(aq) -> PbI2(s) + _2_KNO 3(aq)