<span>Zn+2HCl=ZnCl2+H2</span>
<span>m(ZnCl2)=2,72г</span>
<span>n(ZnCl2)=m(ZnCl2)/M(ZnCl2)</span>
<span>n(ZnCl2)=2,72/136=0,02моль</span>
<span>n(Zn)/1=n(H2)/1=n(ZnCl2)/1</span>
<span>=> n(Zn)=n(H2)=n(ZnCl2)/1=0,02</span>
<span>V(H2)=n(H2)*Vмолярное(H2)</span>
<span>V(H2)=0,02*22,4=0,448 л</span>
<span>m(Zn)=n(Zn)*M(Zn)=1,3 г</span>
<span>Ответ: 44,8 л; 1,3 г</span>