A researcher wants to experiment with an element that reacts like phosphorus (P) but has a greater atomic mass. Which element should the researcher select for the experiment? 1.)Nitrogen (N)
2.)Silicon (Si)
3.)Arsenic (As)
4.)Sulfur (S)

Most likely N or S it might not be safe but that is what experiments do I guess.

Explanation:

the answer correct is 4.

sulfur(s)

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:

answer: i would say b.

explanation: