<span>2NaOH+Zn(OH)2=Na2[Zn(OH)4]
n(</span>Zn(OH)2)=9.9/99=0.1
2n(NaOH)=n(Zn(OH)2)
Vр-ра=0.2/2=0.1 л
CaO+2HNO3 = Ca(NO3)2 + H20
Находим n (количество вещества, моль) CaO
n (CaO)= m/M = 18/56 =0,322 моль
n (CaO) = n (Ca(NO3)2) = 0,322 моль (коэффициенты перед ними равны)
m (Ca(NO3)2) = n*M=0.322*164=52,8 г
<span> 2</span><em>C</em><span> + </span><em>Ca</em><span> = </span><em>CaC2</em>
<span>CaC2+2H2O ---></span><em>C2H2</em><span>+Ca(OH</span><span>)2</span>
<span>2C2H2+5O2=4CO2+2H2O</span>
<span>Mg(OH)2 +CO2= MgCO3 +H2O</span>
<span><em>MgCO3</em><span> + </span><em>H2O</em><span> + СO2 = Mg(HCO3)2</span></span>
1)Гептан (н-гептан) = H3C–CH2–CH2–CH2–CH2–CH2–CH32)2-Метилгексан = H3C–CH(CH3)–CH2–CH2–CH2–CH3<span>3)3-Метилгексан = H3C–CH2–CH(CH3)–CH2–CH2–CH3</span>4)2,2-Диметилпентан = (H3C)3–C–CH2–CH2–CH3<span>5)2,3-Диметилпентан = (H3C)2–CH–CH(CH3)–CH2–CH3</span>6)2,4-Диметилпентан = (H3C)2–CH–CH2–CH–(CH3)27)3,3-Диметилпентан = H3C–CH2–C(CH3)2–CH2–CH38)3-Этилпентан = H3C–CH2–CH(CH2CH3)–CH2–CH3<span>9)2,2,3-Триметилбутан = (H3C)3-C–CH(CH3)–CH3</span>