Can someone please help me Which three gases are released into the atmosphere when volcanoes erupt?
radon, water vapor, carbon monoxide
radon, helium, nitrogen
nitrogen, water vapor, carbon dioxide
O carbon dioxide, carbon monoxide, radon

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

the answer is the first option

explanation:

just googled it m8. not that hard

lol

може ли да зареждате повече информация, моля