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gurgen13
@gurgen13
July 2022
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№1. Определите массовую долю кислорода и водорода в соединениях: CaHPO4, Ca(H2PO4)2, Na[Al(OH)4], Al2O3∙2SiO2∙2H2O. Помогите пожалуйста!!
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krioira
CaHPO4
Mr(CaHPO4)=40+1+31+4*16=136
W(O)=64/136=0.47=47%
W(H)=1/136=0.007=0.7%
Ca(H2PO4)2
Mr(Ca(H2PO4)2)=40+4*1+2*31+8*16=234
W(O)=128/234=0,55=55%
W(H)=4/234=0.017=1.7%
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Answers & Comments
Mr(CaHPO4)=40+1+31+4*16=136
W(O)=64/136=0.47=47%
W(H)=1/136=0.007=0.7%
Ca(H2PO4)2
Mr(Ca(H2PO4)2)=40+4*1+2*31+8*16=234
W(O)=128/234=0,55=55%
W(H)=4/234=0.017=1.7%