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ExtremeBDS [4]
3 years ago
5

What is the predicted order of first ionization energies from highest to lowest for lithium (Li), sodium (Na), potassium (K), an

d rubidium (Rb
Chemistry
2 answers:
PSYCHO15rus [73]3 years ago
4 0
U have it in the right order
konstantin123 [22]3 years ago
3 0

Explanation:

Ionization energy is the energy necessary for a gaseous atom or ion to remove an electron.

Larger is the size of an atom easily it is able to remove an electron as valence shell is away from the nucleus. So, there occurs no force of attraction between the nucleus and valence electrons.

On the other hand, smaller is the size of atom then more is the force of attraction between its nucleus and valence electrons. So, more energy is required to remove an electron. This causes high ionization energy.

Therefore, down the group size of atoms increases this results in decrease in ionization energy.

Since, Li, Na, K and Rb are all group 1 elements. Hence, their order of first ionization energies from highest to lowest will be as follows.

                                  Li > Na > K > Rb

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Calculate the final molarity of HCl the resulting solution when 5.56 mL of 4.108 M HCl is added to 4.44 mL of water.
puteri [66]

The final molarity of HCl is 2.284 M

We'll begin by listing what was given from the question. This is shown below:

Initial volume (V₁) = 5.56 mL

Initial Molarity (M₁) = 4.108 M

Final volume (V₂) = 5.56 + 4.44 = 10 mL

<h3>Final Molarity (M₂) =? </h3>

The final molarity of the HCl solution can be obtained by using the dilution formula as illustrated below:

<h3>M₁V₁ = M₂V₂</h3>

4.108 × 5.56 = M₂ × 10

22.84048 = M₂ × 10

Divide both side by 10

M₂ = 22.84048 / 10

<h3>M₂ = 2.284 M</h3>

Therefore, final molarity of the HCl solution is 2.284 M.

Learn more: brainly.com/question/6103588

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If you were given two transparent liquids how would you determine which is pure and which is salt water
Tpy6a [65]
Based off the salt levels in each water.
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3 years ago
The energy in biomass is used to make electricity. How is the energy stored in
juin [17]

Answer:A

Explanation:

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Assume that the heat lost by the surface is gained by ethyl chloride. What enthalpies must you consider if you were to calculate
Ann [662]

Answer:

Specific heat of ethyl chloride in gas and liquid phases, enthalpy of vaporization and specific heat of solid surface.

Explanation:

In order to determine the final temperature, the heat lost by the chloride needs to be found. This would require the specific heat in both phases and the enthalpy of vaporization. (you will use q=mc(delta)T and q=m(delta)H)

Then the energy gained by the surface needs to be found. This will require the specific heat in order to use the q=mc(delta)T equation.

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if you meant the Earth's revolving orbit. It is an elliptical orbit.

will you mark me the BRAINLIEST please

5 0
2 years ago
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