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Дарья170701
@Дарья170701
August 2022
2
2
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Найти :
Mr(K2O)
Mr(Fe2O3)
Mr(HNO3)
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Answers & Comments
naugros
Mr(K2O)=39*2+16=94
Mr(Fe2O3)=56*2+16*3=460
Mr(HNO3)=1+14+16*3=63
15 votes
Thanks 24
Ministrely
Mr(K2O)= Ar(K)+ 2Ar(O)=39+ 2x16 = 39+32=71
Mr (Fe2O3)= 2Ar(Fe)+ 3(O)= 2x56 +3x16 = 112+48= 160
Mr(HNO3)= Ar(H)+ 3Ar(N)+3Ar(O)= 1+3x14+3x16=1+42+48= 91
14 votes
Thanks 21
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Answers & Comments
Mr(Fe2O3)=56*2+16*3=460
Mr(HNO3)=1+14+16*3=63
Mr (Fe2O3)= 2Ar(Fe)+ 3(O)= 2x56 +3x16 = 112+48= 160
Mr(HNO3)= Ar(H)+ 3Ar(N)+3Ar(O)= 1+3x14+3x16=1+42+48= 91