1)
mSiO2=60u
60g SiO2 ----- 28g Si
45g SiO2 ------ xg Si
x = 21g Si
2)
mCa=40u
mCaBr2=200u
200g CaBr2 ------ 40g Ca
xg CaBr2 -------- 80g Ca
x = 400g CaBr2
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1)
mSiO2=60u
60g SiO2 ----- 28g Si
45g SiO2 ------ xg Si
x = 21g Si
2)
mCa=40u
mCaBr2=200u
200g CaBr2 ------ 40g Ca
xg CaBr2 -------- 80g Ca
x = 400g CaBr2