<u>Answer:</u> The number of valence electron in the given atom are 5
<u>Explanation:</u>
Valence electrons are defined as the electrons which are present in the outermost shell of an atom. Outermost shell has the highest value of 'n' that is principal quantum number.
For the given electronic configuration: 
When an element belongs to d-block, the number of valence electrons are present in 
orbitals
Here, n = 4
The electrons in '4s' orbital = 2
The electrons in '3d' orbital = 3
Number of valence electrons = 2 + 3 = 5
Hence, the number of valence electron in the given atom are 5
Mass of Magnesium nitrate produced : 593.2 g
<h3>Further explanation</h3>
The reaction equation is the chemical formula of reagents and product substances
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.
Reaction
2HNO₃ + Mg(OH)₂ → Mg(NO₃)₂ + 2H₂0
mol HNO₃ = 8
From the equation, mol ratio of HNO₃ : Mg(NO₃)₂ = 2 : 1, so mol Mg(NO₃)₂ :
Mass Mg(NO₃)₂(MW=148,3 g/mol) :
Answer:
A.) Brønsted-Lowry bases
Explanation:
Amines have a lone pair of electrons.
Brønsted-Lowry bases donate a lone pair of electrons in exchange for a hydrogen ion.
Therefore, if exposed to an acid, amines will give up electrons in order to bond with a hydrogen. This makes them Brønsted-Lowry bases.
Answer:
The zebra mussel is a small freshwater mussel.
Answer:
The answer is 2,200ºC
Explanation:
I took the assignment for Edge, I don't think I can send the image because it might pick up on that and get reported, sorry!
The only other rationale that I have is that it's boiling because the graph shows that it's at a constant temperature/rate at 2,200ºC for quite a while. Typically when something boils, it stays at that constant rate of boiling, unless you turn the temperature up or it's finally able to peak..?
