Which of the following reactions is balanced? Question 13 options:

A)

Sn2+ + Fe3+ → Sn4+ + Fe2+

B)

Sn2+ + 2Fe3+ → Sn4+ + Fe2+

C)

Sn2+ + 2Fe3+ → Sn4+ + 2Fe2+

D)

2Sn2+ + Fe3+ → 2Sn4+ + Fe2+

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 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.

How are isotopes of the same chemical element alike? how are they different?

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