Hydrogen .When acids touches all metal hydrogen gas is emitted .Strong acids is one that can produce a high concentration of hydrogen ions.Hope this helped!
the orbit of the moon around earth causes the phases since the light from the moon is caused by a reflection of sunlight... btw wrong subject,....
I- wym incorrect answer i-
This problem refers to a parallel plate capacitor. There is
an electric field between the two plates. The working equation to be used is
the Gauss’s Law which is
Electric field = Surface charge density / ε0
The answer is -2.52 μC/m2.