What makes balancing redox reactions different from balancing other reactions?

What is the mass of 8 moles of sodium atoms

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons