Which group on the periodic table has elements with atoms that tend not to bond with atoms of other elements?

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.