已知：Fe(s)＋
O2(g) = FeO(s)ΔH1=－272kJ/mol
2Al(s)＋
O2(g)= Al2O3(s)ΔH2=－1675kJ/mol
则2Al(s) ＋3FeO(s) = Al2O3(s)+ 3Fe(s)的ΔH是
| A．－859kJ/mol | B．859kJ/mol | C．－1403kJ/mol | D．－2491kJ/mol |
相关试题
—— Do you mind my opening the window? It’s a bit hot in here.
—— ______ , as a matter of fact
| A．Go ahead | B．Yes, my pleasure |
C．Yes, I do | D．Come on |
It’s high time you had your hair cut ; it’s getting _______ . 
| A．too much long | B．much too long |
C．long too much | D．too long much |
My friend showed me round the town, ______ was very kind of him. 
| A．which | B．that | C．where | D．it |
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
粤公网安备 44130202000953号