Answer: The second choice
Explanation: The question is most likely asking what the arrow's pointing at, and it's right at the meeting point for lines x and y. Lines x and y would be the common ancestors of the point the arrow is showing since they're above the point and meet up to the point.
Answer: electrolytes hydrate you and give you energy.
Explanation: please add more information to this question. I can tell you this though from my answer it should help you define what is and isn't an electrolyte. I hope that this is helpful to you.
An atomic mass unit is defined as precisely 1/12 the mass of an atom of carbon-12.
Ph= -log[h30]
Ph= -log[1.7x10^-4]
pH= 3.77
pH is acidic
M=D*V,
V=m/D
m=15 g
D=3 g/ml
V=15 g/3 g/ml=5 ml
