A sample of gas consists of 4.0 moles, and exists at stp. What is the volume of the gas?

Explanation:

At STP (standard temperature and pressure), all gases have a volume of 22.4 liters per mole.

Multiply by the given number of moles, 4.0

The moles will cancel out. The 1 in the denominator can be ignored, so this becomes a simple multiplication problem.

4.0 moles of a gas at STP have a volume of 89.6 liters.

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation: