<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;" id="docs-internal-guid-5e9d86c8-a1a2-9bbe-fe1f-de745d93c16e"><span style="font-size: 26.1427px; font-family: Arial;">GS hh ban đầu m=100gam</span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 26.1427px; font-family: Arial;">Gọi nCaCO3" role="presentation" style="font-size: 16px; display: inline; word-spacing: 0px; position: relative;">CaCO3CaCO3=x mol nCaSO4" role="presentation" style="font-size: 16px; display: inline; word-spacing: 0px; position: relative;">CaSO4CaSO4=y mol</span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 26.1427px; font-family: Arial;">=>100x+136y=100</span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 26.1427px; font-family: Arial;">Kết tủa gồm CaSO4" role="presentation" style="font-size: 16px; display: inline; word-spacing: 0px; position: relative;">CaSO4CaSO4 x+y mol</span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 26.1427px; font-family: Arial;">m ktủa=121,43 gam=136(x+y)</span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 26.1427px; font-family: Arial;">=>x=0,59528 mol và y=0,29759 mol</span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size: 26.1427px; font-family: Arial;">=>%mCaCO3" role="presentation" style="font-size: 16px; display: inline; word-spacing: 0px; position: relative;">CaCO3CaCO3=59,528%</span></p><span style="font-size: 26.1427px; font-family: Arial;">%mCaSO4" role="presentation" style="font-size: 16px; display: inline; word-spacing: 0px; position: relative;">CaSO4CaSO4=40,472%</span>
GS hh ban đầu m=100gamGọi n
$CaCO3
$=x mol n
$CaSO4
$=y mol=>100x+136y=100Kết tủa gồm
$CaSO4
$ x+y molm ktủa=121,43 gam=136(x+y)=>x=0,59528 mol và y=0,29759 mol=>%m
$CaCO3
$=59,528%%m
$CaSO4
$=40,472%