3. If a convergent boundary involves a continental landmass and an ocean basin, what is the result?
A: A chain of volcanic mountains will form on the edge of the continent or just off shore, a deep
ocean trench will form off shore.
B: The land will fold and fault, forming high mountain ranges.
C: The land
at the edge of the continent will buckle, causing the formation of a trench.
D: There will be frequent earthquakes, but no other evidence of crustal movement.

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Explanation:

A

Explanation:

If a convergent boundary involves a continental landmass and an ocean basin, a subduction zone forms. Subduction occurs where a plate moves underneath the other.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o