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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%
$m_{CaCO_3} = 2500.80\% = 2000(gam)$
$n_{CaCO_3} = \dfrac{2000}{100}= 20(mol)$
$CaCO_3 \xrightarrow{t^o} CaO + CO_2$
$n_{CaO} = n_{CaCO_3\ pư} = 20.85\% = 17(mol)$
$m_{CaO} = 17.56 = 952(gam)$
\(n_{CaCO_3}=\dfrac{2500.80\%}{100}=20\left(mol\right)\\ PTHH:CaCO_3\underrightarrow{to}CaO+H_2O\\ 20...........20.......20\left(mol\right)\\ n_{CaO\left(TT\right)}=20.85\%=17\left(mol\right)\\ \rightarrow m_{CaO\left(TT\right)}=56.17=952\left(g\right)\)
`n_(CaCO_3)=m/M=50/(40+12+16xx3)=0,5(mol)`
`PTHH:CaCO_3 --> CaO + CO_2`
tỉ lệ 1: 1 : 1
n(mol) 0,5------------>0,5---->0,5
`m_(CaO)=nxxM=0,5xx(40+16)=28(g)`
a) $CaCO_3 \xrightarrow{t^o} CaO + CO_2$
b) $m_{CaCO_3} = 120 - 120.20\% = 96(gam)$
Theo PTHH :
$n_{CaO} = n_{CaCO_3} = \dfrac{96}{100} = 0,96(mol)$
$\Rightarrow m_{CaO} = 0,96.56 = 53,76(gam)$
c) $n_{CO_2} = n_{CaCO_3} = 0,96(mol)$
$\Rightarrow V_{CO_2} = 0,96.22,4 = 21,504(lít)$
1. a) \(2Fe\left(OH\right)_3-^{t^o}\rightarrow Fe_2O_3+3H_2O\)
b)PT: 214----------------->160 (kg)
Đề: x------------------------>80(kg)
=> x=\(\dfrac{80.214}{160}=107\left(kg\right)\)
c) => \(H=\dfrac{107}{120}.100=89,17\%\)
2. a) \(CaCO_3-^{t^o}\rightarrow CaO+CO_2\)
\(n_{CaCO_3\left(pứ\right)}=n_{CaO}=\dfrac{151,2}{56}=2,7\)
=> \(m_{CaCO_3\left(pứ\right)}=2,7.100=270\left(kg\right)\)
=> \(H=\dfrac{270}{300}.100=90\%\)
b) \(n_{CO_2}=n_{CaO}=\dfrac{151200}{56}=2700\left(mol\right)\)
=> \(V_{CO_2}=2700.22,4=60480\left(l\right)\)
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)
$n_{CaO} = n_{CaCO_3\ pư} = 1,5.80\% = 1,2(kmol)$
$m_{CaO} = 1,2.56 = 67,2(kg)$
\(a.PTHH:CaCO_3\underrightarrow{to}CaO+CO_2\\ n_{CaO}=n_{CaCO_3}\\ \rightarrow m_{CaO}=\dfrac{56}{100}.150=84\left(kg\right)\\ b.m_{CaO}=84.80\%=67,2\left(kg\right)\)