tolong kerjakan no 4 pakai cara

HC=CIG(g)HI+HH+HA=82kj

rumus = jmlh reaktan - jmlh produk

deltaH = {598 + (4x413) + 431} - {(5x413) + 347 + (x)}
  -82    = {598 + 1652 + 431} - {2065 + 347 + (x)}
  -82    = 2681 - 2412 +(x)
  -82    = 269 + (x)
   x      = 269 + 82
   x      = 351