Acatalyst is added to a system at equilibrium. if the temperature remains constant, the activation energy of the forward reaction
(1) decreases(2) increases(3) remains the same

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 !

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

is there any options? maybe im just not seeing them but i need the options to

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