How are electromagnetic waves different from mechanical waves? Question 1 options:

Electromagnetic waves can travel through empty space; mechanical waves can not

Electromagnetic waves travel through water; mechanical waves can only travel through solid matter

Electromagnetic waves are long chains of vibrating molecules; mechanical waves aren't

Electromagnetic waves need a medium to travel through; mechanical waves do not

Electromagnetic waves can travel through empty space; mechanical waves can not  

Explanation:

The salient differences between electromagnetic waves and mechanical waves is that electromagnetic waves can travel through empty spaces but mechanical waves cannot.

Mechanical waves always requires a material medium for their propagation. No known mechanical waves can pass through an empty vacuum.

Electromagnetic waves on the other hand can pass through vacuum. They do not require a material medium for propagation.

This makes them unlimited in their form and mode of propagation.

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:

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be