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\(PTHH:CaCO_3\xrightarrow{t^o}CO_2+CaO\\ BTKL:m_{CaCO_3}=m_{CO_2}+m_{CaO}=22,4+17,6=40(g)\\ \Rightarrow m_{CaCO_3(tt)}=\dfrac{40}{85\%}=47,06(g)\\ \Rightarrow m_{\text{đá vôi}}=\dfrac{47,06}{80\%}=58,825(g)\)
$m_{CaCO_3} = 2500.80\% = 2000(gam)$
$n_{CaCO_3} = \dfrac{2000}{100}= 20(mol)$
$CaCO_3 \xrightarrow{t^o} CaO + CO_2$
$n_{CaO} = n_{CaCO_3\ pư} = 20.85\% = 17(mol)$
$m_{CaO} = 17.56 = 952(gam)$
\(n_{CaCO_3}=\dfrac{2500.80\%}{100}=20\left(mol\right)\\ PTHH:CaCO_3\underrightarrow{to}CaO+H_2O\\ 20...........20.......20\left(mol\right)\\ n_{CaO\left(TT\right)}=20.85\%=17\left(mol\right)\\ \rightarrow m_{CaO\left(TT\right)}=56.17=952\left(g\right)\)
1)
1,2 tấn = 1200(kg)
5 tạ = 500(kg)
\(m_{CaCO_3} = 1200.80\% = 960(kg)\)
\(CaCO_3 \xrightarrow{t^o} CaO + CO_2\\ n_{CaCO_3\ pư} = n_{CaO} = \dfrac{500}{56}(mol)\\ \Rightarrow H = \dfrac{\dfrac{500}{56}.100}{960}.100\% = 93\%\)
1 (H)= 93,11%
2 (H)=88.08%
m cao=1.064(tấn)
==> m cr = 1.065(tấn)
%m cao = 56%
a)
$CaCO_3 \xrightarrow{t^o} CaO + CO_2$
$n_{CaO} = n_{CaCO_3} = \dfrac{150}{100} = 1,5(kmol)$
$m_{CaO} = 1,5.56 = 84(kg)$
b)
$n_{CaO} = n_{CaCO_3\ pư} = 1,5.80\% = 1,2(kmol)$
$m_{CaO} = 1,2.56 = 67,2(kg)$
\(a.PTHH:CaCO_3\underrightarrow{to}CaO+CO_2\\ n_{CaO}=n_{CaCO_3}\\ \rightarrow m_{CaO}=\dfrac{56}{100}.150=84\left(kg\right)\\ b.m_{CaO}=84.80\%=67,2\left(kg\right)\)
\(n_{CaCO_3\left(bđ\right)}=\dfrac{1000.80\%}{100}=8\left(mol\right)\Rightarrow n_{CaCO_3\left(pư\right)}=\dfrac{8.75}{100}=6\left(mol\right)\)
PTHH: CaCO3 --to--> CaO + CO2
6------------->6
=> \(m_{CaO}=6.56=336\left(g\right)\)
\(m_{CaCO_3}=1000.80\%=800\left(g\right)\\ \rightarrow n_{CaCO_3}=\dfrac{800}{100}=8\left(mol\right)\)
PTHH: $CaCO_3 \xrightarrow{t^o} CaO + CO_2$
8------->8
$\rightarrow m_{CaO} = 8.56.75\% = 336 (g)$
1)
1,2 tấn = 1200(kg)
5 tạ = 500(kg)
mCaCO3=1200.80%=960(kg)mCaCO3=1200.80%=960(kg)
CaCO3to→CaO+CO2nCaCO3 pư=nCaO=50056(mol)⇒H=50056.100960.100%=93%
\(m_{\text{CaCO_3}}=1000.95\%=950kg\\ \rightarrow n_{\text{CaCO_3}}=9,5mol\)
\(m_{CaCO_3}\underrightarrow{t^o}CaO+CO_2\)
9,5 → 9,5
\(\rightarrow V_{CO_2}=9,5.22,4=212,8\)
→ hiệu suất phản ứng là
\(\dfrac{159,6}{212,8}.100=75\%\)
mrắn (sau khi nung) = \(\dfrac{300.78}{100}=234\left(g\right)\)
=> mCO2 = 300 - 234 = 66 (g)
=> \(n_{CO_2}=\dfrac{66}{44}=1,5\left(mol\right)\)
mCaCO3(bđ) = 300.80% = 240 (g)
PTHH: CaCO3 --to--> CaO + CO2
1,5<-----------------1,5
=> \(H\%=\dfrac{1,5.100}{240}.100\%=62,5\%\)
Đổi \(1kg=1000g\)
PTHH: \(CaCO_3\underrightarrow{t^o}CaO+CO_2\)
Ta có: \(n_{CaCO_3}=\dfrac{1000}{100}=10\left(mol\right)=n_{CaO}\)
\(\Rightarrow m_{CaO\left(lýthuyết\right)}=10\cdot56=560\left(g\right)\) \(\Rightarrow m_{CaO\left(thựctế\right)}=560\cdot80\%=448\left(g\right)=0,448\left(kg\right)\)