Examine the statement and balanced equation.

pure elemental iron undergoes a single replacement reaction with sulfuric acid (h2so4) to produce iron(iii) sulfate (fe2(so4)3) and hydrogen gas.

2fe + 3h2so4 → fe2(so4)3 + 3h2
(m fe = 55.8 g/mol, m h2so4 = 98.1 g/mol, m fe2(so4)3 = 399.9 g/mol, m h2 = 2.0 g/mol)

if 3.21 x 1012 mol of iron(iii) sulfate are formed, how many g of it will be produced?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

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.