What causes the subduction zone when an oceanic plate collides with a continental plate? continental plates are more dense than oceanic plates so the continental plate dives under the oceanic plate oceanic plates are more dense than continental plates so the oceanic plate dives under the continental plate continental plates are more dense than oceanic plates causing the oceanic plate to push upward when the continental plates collide the force is so great that it causes the surrounding crust to collapse

Option (2)

Explanation:

The oceanic plates are denser compared to the continental plate because they are comprised of relatively denser minerals. When these two plates namely the continental and the oceanic plate collides, forms a subduction zone, where the denser oceanic crust goes below the lighter continental plate. This results in the partial melting of the subducting oceanic crust, that mixes up with the melt and eventually rises up again due to the force exerted by the convection current. It thereby results in the formation of the volcanoes on the over-riding plate.

Thus, the correct answer is option (2).

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

n2(g) + 3h2-> 2nh3(g)   this is the balanced equation

note the mole ratio between n2, h2 and nh3.   it is 1 : 3 : 2   this will be important.

moles n2 present = 28.0 g n2 x 1 mole n2/28 g = 1 mole n2 present

moles h2 present = 25.0 g h2 x 1 mole h2/2 g = 12.5 moles h2 present

based on mole ratio, n2 is limiting in this situation because there is more than enough h2 but not enough n2.

moles nh3 that can be produced = 1 mole n2 x 2 moles nh3/mole n2 = 2 moles nh3 can be produced

grams of nh3 that can be produced = 2 moles nh3 x 17 g/mole = 34 grams of nh3 can be produced

note:   the key to this problem is recognizing that n2 is limiting, and therefore limits how much nh3 can be produced.