Suppose that 523 mL of hydrogen gas are produced through a replacement reaction involving solid iron and sulfuric acid (H2SO4)
at STP. How much iron(II) sulfate is also produced?
Answer in units of g.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

the temperature of the gas, in k, not celsius.

you did not give any options thus this is the best answer i can give to you with this little information you have given

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