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Stolb23 [73]
2 years ago
15

The second shell in the ground state of oxygen contains how many electrons

Chemistry
1 answer:
Montano1993 [528]2 years ago
5 0
The atomic number of oxygen is 8. It has 8 electrons in its electron shells. The first electron shell can hold only 2 electrons. Thus, the second shell of the oxygen will contain the rest amount of electrons i.e. 6 electrons.
Answer: The second shell in the ground state of oxygen contains "6" electrons. 
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Which solution below yields the lowest final concentration of a sodium hydroxide solution prepared by diluting 50.00 mL of conce
Firdavs [7]

Answer:

The answer to your question is: letter D. 1.33 L

Explanation:

Data

V1 = 50 ml

C1 = 19.3

To solve this problem use the formula  C₁V₁ = C₂V₂

                            C2 = C1V1 / V2

C = concentration

V = volume

a) 1.15 L

                     C2 = (19.3)(50) / 1150

                      C2 = 0.84 M

b) No right answer

c) V2= 0.80 L

                     C2 = (19.3)(50) / 800

                     C2 = 1.2 M

d) V2 = 1.33 L

                        C2 = (19.3)(50) / 1330

                       C2 = 0.72 M

e) V2 = 350 ml

                         C2 = (19.3)(50) / 350

                         C2 = 2.75 M  

3 0
3 years ago
We apply the same amount of energy to 10.0-g samples of aluminum, iron, and silver which begin at the same temperature.
maw [93]

Answer:

Explanation:

A sound knowledge of specific heat capacity of the metals is required in this case.

The specific heat capacity of a metal is the quantity of heat required to the raise the temperature of a unit mass of it by 1°C.

It is related to quantity of heat using the expression below;

               H   =   m  c  Δt

where m is the mass

            c is the specific heat capacity

            Δt is the temperature change

let us make the specific the subject of the expression;

                     c  = \frac{H}{m x change in temperature}

we can see that there is an inverse relationship between specific heat and temperature change.

The specific heat capacity of a body is an intensive property that is unique to the metal.

   The higher the specific heat capacity, the lower the amount of temperature change in it.

Let us find the specific heat capacity of the given metals;

 Aluminium     0.897J/gK

 Iron                 0.412J/gK

 Silver               0.24J/gK

 After the heat is supplied,

      Silver >  Iron > Aluminium in terms of temperature change

 

7 0
2 years ago
Identify the type of reaction and the products. Fe(NO3)2 + Na ->
Vinvika [58]

Answer:

Substitution and Na(No3) + Fe

Explanation:

5 0
3 years ago
Which is an example of the strong force in action?
yarga [219]

I would say that it would probably be: The Sun pulls on Earth as Earth moves around the sun.

Sorry if I'm wrong <3

3 0
2 years ago
Read 2 more answers
The use of microorganism in our day to day life is.................
Ipatiy [6.2K]

Explanation:

The use of microorganism in our day to day life is making medicine.

7 0
2 years ago
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