A.CO + H2O = CO2+ H2 ΔH = -41 KJ/mol
B.CO(g)+H2O(g)= CO2(g)+H2(g) ΔH =+ 41 KJ/mol
C.CO2(g)+H2(g)= CO(g)+H2O(g) ΔH = + 41 KJ/mol
D.CO2(g)+H2(g) = CO(g)+H2O(g) ΔH = -41 KJ/mol
A.2H2(g)+O2(g)==2H2O(l) ΔH=-142.9kJ·mol-1
B.2H2(g)+O2(g)==2H2O(l) ΔH=-571.6kJ·mol-1
C.2H2+O2==2H2O ΔH=-571.6kJ·mol-1
D.H2(g)+1/2O2(g)==H2O(g) ΔH=-285.8kJ·mol-1
开始考试点击查看答案A.H2O(g) = H2(g)+1/2O2(g) △H=+264kJ·mol-1
B.2H2(g)+ O2(g)=2H2O(g) △H=-528kJ·mol-1
C.H2(g)+1/2O2(g)=H2O(l) △H=+264 kJ·mol-1
D.H2(g)+ 1/2O2(g)= H2O(l) △H=-264kJ·mol-1
开始考试点击查看答案A.2C2H2(g)+5O2(g)=4CO2(g)+2H2O(l); ΔH=-2b kJ / mol
B.C2H2(g)+5/2O2(g)=2CO2(g)+H2O(l); ΔH=2b kJ / mol
C.2C2H2(g)+5O2(g)=4CO2(g)+2H2O(l); ΔH=-4b kJ / mol
D.2C2H2(g)+5O2(g)=4CO2(g)+2H2O(l); ΔH=b kJ / mol
开始考试点击查看答案A.2CH4(g) + 4O2(g) == 2CO2(g) + 4H2O(l) ΔH == +890 kJ·mol-1
B.CH4(g) + 2O2(g) == CO2(g) +2H2O(l) ΔH == +890 kJ·mol-1
C.2CH4(g) + 4O2(g) == 2CO2(g) + 4H2O(l) ΔH == -1680 kJ·mol-1
D.CH4(g) + 2O2(g) == CO2(g) +2H2O(l) ΔH == -1680 kJ·mol-1
开始考试点击查看答案A.C8H18(l)+ 25/2O2(g)=8CO2(g)+9H2O(g)△H=-48.40kJ/mol
B.C8H18(l)+ 25/2O2(g)=8CO2(g)+9H2O(l)△H=-5518kJ/mol
C.C8H18(l)+ 25/2O2(g)=8CO2(g)+9H2O(g)△H=+5518kJ/mol
D.C8H18(l)+ 25/2O2(g)=8CO2(g)+9H2O(l)△H=+48.40kJ/mol
开始考试点击查看答案A.C2H5OH(1)+3O2(g)=2CO2(g)+3H2O(1)△H = -Q
B.C2H5OH(1)+3O2(g)=2CO2(g)+3H2O(1)△H = - Q / 2
C.1/2 C2H5OH(1)+3/2O2(g)=CO2(g)+3/2H2O(1)△H = -Q
D.C2H5OH(1)+3O2(g)=2CO2(g)+3H2O(1)△H = -2Q
开始考试点击查看答案A.1/2A2(g)+1/2B2(g)=AB(g) ΔH=-91.5 kJ·mol-1
B.A2(g)+B2(g)=2AB(g) ΔH=-183 kJ·mol-1
C.1/2A2(g)+1/2B2=AB(g) ΔH=+91.5 kJ·mol-1
D.2AB(g)=A2(g)+B2(g) ΔH=+183 kJ·mol-1
开始考试点击查看答案A.S的燃烧热为297.23 kJ·mol-1
B.S升华是吸热过程
C.S(g)+O2(g) ==SO2(g)放出的热量小于297.23 kJ
D.形成1 mol SO2的化学键释放的总能量大于断裂1 mol S(s)和1 mol O2(g)的化学键所吸收的总能量
开始考试点击查看答案A.C(s)+1/2O2(g)=CO(g);△H=-393.5 kJ/mol
B.2H2(g)+O2(g)=2H2O(g);△H=+571.6 kJ/mol
C.CH4(g)+2O2(g)=CO2(g)+2H2O(g);△H=-890.3 kJ/mol
D.1/2C6H12O6(s)+3O2(g)=3CO2(g)+3H2O(l);△H=-1400 kJ/mol
开始考试点击查看答案A.Q1+Q2<Q3
B.Q1+Q2>2Q3
C.Q1+Q2=2Q3
D.Q1+Q2<2Q3
开始考试点击查看答案高中数学代数与函数一数系的扩充与复数的引入36
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入28
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入29
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入30
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入31
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入32
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入33
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入34
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入35
类别:数学(文科)高中数学代数与函数一数系的扩充与复数的引入26
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