Question

Tính khối lượng của hỗn hợp gồm 2,24 lít SO2 và 1,12 lít O2 (ĐKTC)

Answer 1

\(n_{SO_2\left(dktc\right)}=\dfrac{V}{22,4}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\\ m_{SO_2}=n\cdot M=0,1\cdot\left(32+16\cdot2\right)=6,4\left(g\right)\)

\(n_{O_2\left(dktc\right)}=\dfrac{V}{22,4}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\\ m_{O_2}=n\cdot M=0,05\cdot32=1,6\left(g\right)\)

\(=>m_{hh}=1,6+6,4=8\left(g\right)\)

Answer 2

\(n_{SO_2}=\dfrac{V_{\left(\text{đ}ktc\right)}}{22,4}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\\ \Rightarrow m_{SO_2}=n.M=0,1.64=6,4\left(g\right)\\ n_{O_2}=\dfrac{V_{\left(\text{đ}ktc\right)}}{22,4}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\\ \Rightarrow m_{O_2}=n.M=0,05.32=1,6\left(g\right)\\ \Rightarrow m_{hh}=m_{SO_2}+m_{O_2}=6,4+1,6=8\left(g\right)\)