Answer:
not sure
Explanation:
a physical change (can)change.,....
Igneous rocks are found where plates diverge, as lava rises and fills the gap between the plates. Igneous rocks also form where plates converge. The subducting plate melts as it sinks into the crust of the Earth, and the melt rises into the overriding plate forming volcanoes.
What do you mean by that? Can you explain further?
H is 4*10^6 M , OH is 2.5*10^-9 M
