Объяснение:
Mr(Ca(OH)2 = 40 + 16*2 + 1*2 = 74
WCa) = Ar(Ca) *n / Mr(Ca(OH)2 *100% = 40*1 / 74 *100% =54%
Mr(HNO3) = 1+14+16*3 = 63
W(N) = Ar(N) *n / Mr(HNO3) *100% = 14*1 / 63 *100% =22%
Объяснение:
Mr(Ca(OH)2 = 40 + 16*2 + 1*2 = 74
WCa) = Ar(Ca) *n / Mr(Ca(OH)2 *100% = 40*1 / 74 *100% =54%
Mr(HNO3) = 1+14+16*3 = 63
W(N) = Ar(N) *n / Mr(HNO3) *100% = 14*1 / 63 *100% =22%