Conner is testing the pH of a swimming pool and he finds it to be 6.5. Optimal pH for swimming is between 7.0 and 7.6.

Chemistry

1 answer:

Lunna [17]2 years ago

8 0

Answer:

The answer is B. I took the test and made a 100

Explanation:

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For each set of elements represented in this periodic table outline, identify the principal quantum number, n, and the azimuthal

Mazyrski [523]

<span>Answer: Yes, the n for potassium would be 4, and for neon would be 2. Just count which row of the periodic table you are on. The "L" tells you whether the highest-energy electron is in an "s" orbital (L=0) or a "p" orbital (L=1) or a "d" orbital (L=2) or an "f" orbital (L=3). The manner in which these orbitals are filled is: for each of the first three rows (up to argon), two electrons in the "s" orbital are filled first, then 6 electrons in the "p"orbitals. The potassium row also starts with filling the "s" orbital at the new "n" level (4) but then goes back to filling up the "d" orbitals of n=3 before it fills up the "p"s for n=4. OK, so potassium has n=4, L = 0, while neon has n=2, L = 1. The quantum numbers connected with "an element" are always referring to the highest-energy electron, i.e., the one that was absent in the predecessor element of the periodic table. When you go from potassium to calcium, you still get n=4, L = 0, because there are two positions in the "s" orbital. But when you go from calcium to scandium, suddenly you go back to n=3, L = 2 ("d" orbital).</span>

3 0

4 years ago

An Isolated system could be best described as a _______________.

grandymaker [24]

Hello Mate!

Well, there are many definitions and descriptions of isolated systems, and here are some of them:

1. It can be a physical system which is located very very far from all other systems, so there is absolutely no interaction between them, thus making it isolated.

2. It can be a thermodynamic system with rigid walls, which prevents mass and energy to pass through.

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