Nồng độ mol?
\(a.n_{HCl}=\dfrac{2,8}{22,4}=0,125mol\\
50ml=0,05l\\
C_{M_{HCl}}=\dfrac{0,125}{0,05}=2,5M\\
b.n_{Na_2CO_3}=\dfrac{6,36}{106}=0,06mol\\
1500ml=1,5l\\
C_{M_{Na_2CO_3}}=\dfrac{0,06}{1,5}=0,04M\\
c.n_{KNO_3}=\dfrac{30,3}{101}=0,3mol\\
1250ml=1,25l\\
C_{M_{KNO_3}}=\dfrac{0,3}{1,25}=0,24M\\
d.n_{Ba\left(OH\right)_2}=\dfrac{51,3}{171}=0,3mol\\
600ml=0,6l\\
C_{M_{Ba\left(OH\right)_2}}=\dfrac{0,3}{0,6}=0,5M\)
a . n H C l = 2 , 8 22 , 4 = 0 , 125 m o l 50 m l = 0 , 05 l C M H C l = 0 , 125 0 , 05 = 2 , 5 M b . n N a 2 C O 3 = 6 , 36 106 = 0 , 06 m o l 1500 m l = 1 , 5 l C M N a 2 C O 3 = 0 , 06 1 , 5 = 0 , 04 M c . n K N O 3 = 30 , 3 101 = 0 , 3 m o l 1250 m l = 1 , 25 l C M K N O 3 = 0 , 3 1 , 25 = 0 , 24 M d . n B a ( O H ) 2 = 51 , 3 171 = 0 , 3 m o l 600 m l = 0 , 6 l C M B a ( O H ) 2 = 0 , 3 0 , 6 = 0 , 5 M