Mr(K2CO3)= 39*2+12+16*3= 78+12+48=90+48=138
Mr(Ca3(PO4)2)= 40*3+31*2+16*8=120+62+128=310
Mr(H2SO4)= 2*1+32+16*4=2+32+64= 98
Mr(K2CO3)= 39*2+12+16*3= 78+12+48=90+48=138
Mr(Ca3(PO4)2)= 40*3+31*2+16*8=120+62+128=310
Mr(H2SO4)= 2*1+32+16*4=2+32+64= 98