14+16*2 = 46
w N= 14/46 = 0,0034 = 30,4%
w O = 32/46 = 0,696 = 69,6
б) 2007+35,5*2 = 278
w Рb = 207/278 = 0,744 = 74,4%
w Cl = 71/278 = 0,256 = 25,6 %
в) 23*2+12+16*3 = 106
wNa = 46/106 = 0,434 = 43,4%
wC = 12/106 = 0,113 = 11,3%
wO = 48/106 = 0,453 = 54,3%
г) 1*2+32+16*4 = 98
wH = 2/98 = 0,02 = 2%
wS = 32/98 = 0,326 = 32,6%
wO = 64/98 = 0,654 = 65,4%
д) 137*3+2(31+16*4) = 601
w Ba = 411/601 = 0,685= 68,5%
wP = 62/601 = 0,103 = 10,3%
wO = 128/601 = 0,212 = 21,2%
14+16*2 = 46
w N= 14/46 = 0,0034 = 30,4%
w O = 32/46 = 0,696 = 69,6
б) 2007+35,5*2 = 278
w Рb = 207/278 = 0,744 = 74,4%
w Cl = 71/278 = 0,256 = 25,6 %
в) 23*2+12+16*3 = 106
wNa = 46/106 = 0,434 = 43,4%
wC = 12/106 = 0,113 = 11,3%
wO = 48/106 = 0,453 = 54,3%
г) 1*2+32+16*4 = 98
wH = 2/98 = 0,02 = 2%
wS = 32/98 = 0,326 = 32,6%
wO = 64/98 = 0,654 = 65,4%
д) 137*3+2(31+16*4) = 601
w Ba = 411/601 = 0,685= 68,5%
wP = 62/601 = 0,103 = 10,3%
wO = 128/601 = 0,212 = 21,2%