You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
氧化铁和硝酸的反应方程式1
F e O + 4 H N O _ { 3 } { \stackrel { \Delta } { = } } F e \left( N O _ { 3 } \right) _ { 3 } + 2 H _ { 2 } \uparrow + N O _ { 2 } \uparrow
氢气与氧气燃烧的方程式
2 H _ { 2 } + O _ { 2 } = 2 H _ { 2 } O .
