Seawater found to be seeping up through the canyon floor is why
scientists think Grand Canyon was once covered by an ocean.
Grand cayon is located in Arizona, United States and comprises of a lot of
fossil records and rocks which makes it one of the best sites for geological
study.
The Grand cayon was found to be seeping through its floor which made
scientists think it was once covered by an ocean years ago.
Read more about Grand cayon on brainly.com/question/20629780
Answer:
Fertilizer can enter water supply by rainwater into a stream as runoff
Explanation:
Lawn and garden chemicals, such as fertilizers enter the groundwater in two ways. In the first method, the chemicals can enter the groundwater by rainwater into a stream as runoff. .The water in streams replenishes groundwater, so the chemicals are absorbed into the groundwater as well.
Answer:
4. 60 neutrons.
Explanation:
The given isotopes;
¹⁰⁶₄₆Pd
In this isotope, we can deduce that the mass number is the superscript and the atomic number is the subscript;
Mass number = 106
Atomic number = 46
Mass number is the number of protons and neutrons in an atom;
Mass number = Protons + neutrons
Atomic number is the number of protons
So, Number of protons = 46
Number of neutrons = Mass number - Atomic number
= 106 - 46
= 60
Number of neutrons = 60
Answer: The difference in the pH values of the two solutions is 2.7
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
a) For solution A, let
= ![0.0001\times 500M=0.05M](https://tex.z-dn.net/?f=0.0001%5Ctimes%20500M%3D0.05M)
Putting in the values:
b) For solution B,
=![0.0001M](https://tex.z-dn.net/?f=0.0001M)
Putting in the values:
Thus the difference in pH will be (4-1.3)= 2.7.