下列热化学方程式能正确表示可燃物的标准燃烧热的是
| A．H2（g）+ 1/2O2（g）="=" H2O（g）；△H=－242.0kJ/mol |
| B．CH4（g）+ 2O2（g）="=" CO2（g）+2H2O（l）；△H=－802.3kJ |
| C．2H2（g）+ O2（g）="=" 2H2O（l）；△H=－571.6kJ/mol |
| D．CO（g）+ 1/2O2（g）="=" CO2（g）；△H=－283kJ/mol |
相关试题
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A．other | B．others | C．one | D．ones ks |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |
All the dishes in this menu, ______ otherwise stated, will serve two to three people. 
| A．as | B．if | C．though | D．unless |
粤公网安备 44130202000953号