How can students use the model to determine the atomic mass of the beryllium atom A- Add B and D to determine the atomic mass
B- Subtract B and A to determine the atomic mass
C-Subtract B and D to determine the atomic mass
D- Add A, B and C to determine the atomic mass

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:

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

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explanation:

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in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.