Answer for your question is;
2,6 = 8
The first shell is 2 electrons the other shell is 6 electrons
Answer:
1. Venus
471°C
2. Mercury
(430°C) during the day, (-180°C) at night
3. Earth
16°C
4. Mars
-28°C
5. Jupiter
-108°C
6. Saturn
-138°C
7. Uranus
-195°C
8. Neptune
-201°C
Explanation:
.
Given parameters:
Number of protons = 1
Number of electrons = 1
Number of neutrons = 1
unknown:
Total charge = ?
Atoms are made up of elementary particles of protons neutrons and electrons.
Protons are the positively charged particles in an atom
Electrons are the negatively charged particles
Neutrons do not carry any charges
To find the total charge on an atom; simply find the difference between the number of protons and electrons.
Total charge = Number of protons - number of electrons
= 1 - 1
Total charge is 0
Therefore, the total charge is zero, 0
Answer:
See explanation.
Explanation:
Hello,
In this case, for the described chemical reaction:
2 HCl(aq) + Mg(OH)2(aq) → MgCl2(aq) + 2 H2O(l)
We can notice there is a 2:1 molar ratio between the moles of hydrochloric acid and magnesium hydroxide, therefore, at the equivalence point:
And in terms of volumes and concentrations we verify:
So we use the given data to proof it:
Therefore, we can conclude the data is wrong by means of the 2:1 mole ratio that for sure was not taken into account. This is also supported by the fact that normalities are actually the same, but the nomality of magnesium hydroxide is the half of the hydrochloric acid normality since the acid is monoprotic and the base has two hydroxyl ions.
Best regards.
In order to calculate the final concentration of a dilution, it is important to memorise and remember the following equation:
C1V1/C2V2
Where:
C1 = Initial concentration
V1 = Initial volume
C2 = Final concentration
V2 = Final volume
We are given three of the four, and we are asked to calculate the final concentration in moles, so we may substitute these given values into our equation as follows:
C1V1 = C2V2
(2.00m)(50.0 mL) = (C2)(500mL)
100 = C2(500mL)
C2 = 0.2 m
In the final step, we simply divide 100 by 500 to get our final concentration value.
