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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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What is required for electrons to move from the stable energy level to an excited state?
Gekata [30.6K]

answer

When an electron temporarily occupies an energy state greater than its ground state, it is in an excited state. An electron can become excited if it is given extra energy, such as if it absorbs a photon, or packet of light, or collides with a nearby atom or particle

3 0
3 years ago
Find the total mass of three diamonds that have masses of 14.2 grams, 8.73 grams, and 0.912 gram
GaryK [48]
The total mass means that you need to add up all three diamonds' mass. So the calculation equation is 14.2+8.73+0.912 = 23.842 g.
7 0
3 years ago
A container has 800.0 mL of an aqueous solution containing K+ ions. How many grams of K+ ions are in the solution if the molarit
Murljashka [212]

Answer: There are 20.24 grams of K^+ ions in the solution if the molarity is 0.649 M.

Explanation:

Molarity equals number of moles in a liter of solution as follows.

                  M = \frac{no. of moles}{volume in liters}

and, Number of moles equals = \frac{mass}{molar mass}

Therefore, Molarity = \frac{mass}{molecular weight \times volume}

Now, putting values in the above formula as follows.

      Molarity = \frac{mass}{molecular weight \times volume}

     0.649 = \frac{x \times 1000}{39 \times 800}    

(convert the volume from milliliter to liter)

       x = 20.24 grams

Thus, there are 20.24 grams of K^+ ions in the solution if the molarity is 0.649 M.

7 0
3 years ago
What is the function of a vesicle, sometimes called a vacuole, in a animal cell?
stira [4]
<span>To generate all of the energy for the cell, store substances such as food, water, and wastes, and engulf pathogens that have invaded the cell.</span>
5 0
4 years ago
When a calcium atom forms an ion, it loses two electrons. What is the electrical charge of the calcium ion?. . A. -1 . B. -2 . C
9966 [12]
Since it has lost 2 electrons, hence the protons would be more by 2.

Charge:

<span> C. +2</span>
4 0
3 years ago
Read 2 more answers
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