Fe(s) + 2hcl(aq) --> fecl2(aq) + h2(g)

when a student adds 30.0 ml of 1.00 m hcl to 0.56 g of powdered fe, a reaction occurs according to the equation above. when the reaction is complete at 273 k and 1.0 atm, which of the following is true?

a) hcl is in excess, and 0.100 mol of hcl remains unreacted.

d) 0.22 l of h2 has been produced.

the correct answer is d. i can't figure out why a is wrong.

Two things that biomedical has invented or innovated

Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.