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Sloan [31]
3 years ago
7

.

Chemistry
2 answers:
photoshop1234 [79]3 years ago
6 0
If the element have 39 protons, that means that his atomic number is 39, being Yttrium the element. And, the number of protons is the same of the number of electrons, so, 39 electrons.
alexandr402 [8]3 years ago
6 0

Answer:

Yttrium – 39

Explanation:

Since the element is neutral and has 39 protons s the atomic number of the element must be 39. Yttrium is the only element in the periodic table with atomic number 39.

Atomic number of an element is equal to the number of protons which is equal to the number of electrons. Since the element is neutral, the number of electrons in Yttrium is also 39.  

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Relative to electrons and electron states, what does each of the four quantum numbers specify
Alla [95]

Answer:

(n, l, m sub l, m sub s)

N: principle quantum number (1,2,3,4,etc)

l: angular momentum quantum number, the shape (l has to be at least 1 less than n, but can be 0 depending on n)

M sub l: magnetic quantum number (l determines this number)

M sub s: spin quantum number (can only ever be 1/2 or -1/2)

Explanation:

8 0
3 years ago
What is the most common isotope of lithium?
Advocard [28]
Lithium-7 is the most common isotope of lithium.
7 0
3 years ago
Tropical rain forests are being cut down to create farms and pastures, and to harvest trees for construction. What has this type
Mrrafil [7]

The deforestation of tropical rainforest trees to create farms and pastures, and to harvest trees for construction has increased soil erosion.

<h3>WHAT IS DEFORESTATION:</h3>
  • Deforestation is the process whereby trees are cut down for commercial purposes e.g. lumbering for paper production.

  • Rainforest is a vegetation characterized by trees and shrubs. However, these trees serve as soil cover and help prevent soil erosion.

This means that deforestation of tropical rainforest trees to create farms and pastures, and to harvest trees for construction has increased soil erosion

Learn more about deforestation at: brainly.com/question/11697527

5 0
2 years ago
Why does stirring increase the rate of dissolution?
gavmur [86]

The correct option is D.

When dissolving a substance in a solvent, stirring the solution will increased the rate at which the substance dissolved. This is because, when one stirs a solution, it exposes more surface area of the solute to the solvent, thus, increasing the interaction between the solute and the solvent. The higher the quantity of the solute that is exposed to the solvent, the higher the rate of dissolution of the solute.

5 0
3 years ago
Read 2 more answers
ethylene and steam at 320 celsius and 1 atm are fed to a reaction process as an equimolar mixture. the process produces ethanol
Charra [1.4K]

Answer:

Total amount of heat transfer, H_total = 115653.232 J/mol

Explanation:

Full explanation and step by step instructions is attached

6 0
3 years ago
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