Câu 5:
\(PTK_{Cr_2\left(SO_4\right)_3}=52.2+96.3=392\left(đ.v.C\right)\\ PTK_{CaO}=40+16=56\left(đ.v.C\right)\\ PTK_{K_2SO_4.Al_2\left(SO_4\right)_3.24H_2O}=39.2+27.2+24.2.1+24.16+96.4=948\left(đ.v.C\right)\\ PTK_{NaCl}=23+35,5=58,5\left(đ.v.C\right)\\ PTK_{CaCO_3.MgCO_3}=49+12.2+16.3.2=184\left(đ.v.C\right)\\ PTK_{CuSO_4}=64+32+16.4=160\left(đ.v.C\right)\)
