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enot [183]
3 years ago
10

Which of the following are excited in ultraviolet photoelectron spectroscopy?

Chemistry
1 answer:
zavuch27 [327]3 years ago
6 0

Answer:

D. Valance Electrons

Explanation:

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7 0
3 years ago
For each of the following acid-base reactions, calculate how many grams of each acid are necessary to completely react with and
Anika [276]

Answer:

m_{HCl}=2.19gHCl

Explanation:

Hello,

In this case, for the reaction between hydrochloric acid and sodium hydroxide, for 2.4 g of base, we can compute the neutralized grams of acid by applying the 1:1 molar ratio between them and their molar masses, 36.45 g/mol and 40 g/mol respectively as shown below by stoichiometry:

m_{HCl}=2.4gNaOH*\frac{1molNaOH}{40gNaOH}*\frac{1molHCl}{1molNaOH}*\frac{36.45gHCl}{1molHCl}\\   \\m_{HCl}=2.19gHCl

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3 0
3 years ago
Which of the following should be classified as a mixture? water air iron helium
Evgesh-ka [11]
Air is a mixture because it is made up of many constituents like oxygen, argon etc. it can be physically separated by fractional distillation. it doesnt have a formula unlike compounds and elements. its composition varies differently with its constituents.
5 0
3 years ago
Read 2 more answers
Explain what pillow lava is. How does its presence in the central valley of mid-ocean ridges support the idea of sea-floor sprea
kkurt [141]
<span>Pillow lavas have pillow-like structures and are formations that push lava on the surface of the earth underwater. Magma comes out of ocean ridges as pillow lava and forms a new oceanic crust, supporting sea floor spreading. The older crust gets pushed away from the ridge and pushes on to the continents, making them drift.</span>
5 0
3 years ago
Give the ion symbol for the ion that has 27 protons and 24 electrons.
Natalija [7]

Answer:

Z³⁺

Explanation:

The ion symbol can be depicted as Z³⁺ .

In this atom, the number of protons is 27 and the number of electrons is 24.

Protons are the positively charged particles within an atom.

Electrons are the negatively charged particles within an atom.

 To find the charge;

   Charge  = Number of protons  - number of electrons

  Charge  = 27   - 24  = +3

The atom is positively charged and it can be depicted as Z³⁺

7 0
3 years ago
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