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Katarina [22]
3 years ago
8

What is the electron configuration of calcium?

Chemistry
1 answer:
ella [17]3 years ago
5 0

Answer:

(Ar) 4s2

Explanation:

How many numbers in tje outershell etc calcium atomivc no20

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How many total oxygen (O) atoms are present in the products side of the equation C2H5OH + 3O2 → 2CO2 + 3H2O?
kifflom [539]

Answer:

There are seven oxygen atoms in total on the product side.

Explanation:

The oxygen atom is present in both the species of CO₂ and H₂O. As there are two molecules of CO₂, so the number of oxygen atoms from it will be 4. There are three molecules of H₂O in the product side so oxygen atoms from it will be three. So, the total number of oxygen from both species is seven.

3 0
4 years ago
Write the equation of the mirror line for the segment with endpoints (5, 4) and (-1, -1).
charle [14.2K]

Answer:

Explanation:

{\displaystyle {}^{n}x}{}^{n}x, for n = 2, 3, 4, …, showing convergence to the infinitely iterated exponential between the two dots

In mathematics, tetration (or hyper-4) is an operation based on iterated, or repeated, exponentiation. It is the next hyperoperation after exponentiation, but before pentation. The word was coined by Reuben Louis Goodstein from tetra- (four) and iteration.

Under the definition as repeated exponentiation, the notation {\displaystyle {^{n}a}}{\displaystyle {^{n}a}} means {\displaystyle {a^{a^{\cdot ^{\cdot ^{a}}}}}}{\displaystyle {a^{a^{\cdot ^{\cdot ^{a}}}}}}, where n copies of a are iterated via exponentiation, right-to-left, I.e. the application of exponentiation {\displaystyle n-1}n-1 times. n is called the "height" of the function, while a is called the "base," analogous to exponentiation. It would be read as "the nth tetration of a".

Tetration is also defined recursively as

{\displaystyle {^{n}a}:={\begin{cases}1&{\text{if }}n=0\\a^{\left(^{(n-1)}a\right)}&{\text{if }}n>0\end{cases}}}{\displaystyle {^{n}a}:={\begin{cases}1&{\text{if }}n=0\\a^{\left(^{(n-1)}a\right)}&{\text{if }}n>0\end{cases}}},

allowing for attempts to extend tetration to non-natural numbers suc

6 0
3 years ago
How many grams of CaCl, are in 250 mL of 2.0 M CaCl ?
stellarik [79]

Answer: 55 g CaCl2 hope this helps

6 0
3 years ago
How many oxygen atoms are contained in the following chemical formula? 2agno3
sesenic [268]

It would be: 2*3 = 6 oxygen atoms

OPTION D IS YOUR ANSWER......

7 0
4 years ago
Which particle may be gained, lost, or shared by an atom when it forms a chemical bond?
andrew-mc [135]

Electrons because the amount of valence electrons determines the bonds it can form and often times during a chemical bond or the forming of a compound an element will lose some of its electrons.

4 0
3 years ago
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