Structural isomers of octane

When the following equation is balanced using the smallest possible integers, what is the coefficent of oxygen gas? c7h16o(g) + o2(g) → co2(g) + h2o(g) -1 -5 -8 -16 -21

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring