1) A) Balance the following equation: 2 Fe + 6HCI →
3 H2 +
2 FeCl3
B) How many moles of hydrogen gas would be produced in a reaction that yields 7.5
moles of iron chloride?

A) 2Fe+6HCl=3H2+2FeCl

B) 11.25

Explanation:

A)---

B) 2 - 7.5

    3 - x   ⇒ 2x = 7.5*3 ⇒x = 22.5/2 = 11.25

The bones of the skull and spinal column

Explanation:

The central nervous system is better protected than any other system or organ in the body. Its main line of defense is the bones of the skull and spinal column, which create a hard physical barrier to injury.