1) Number of neutrons of Fluorine -19
The number 19 is the mass number of the atom.
The atomic number of fluorine is 9, which means it has 9 protons (which is constant for any atom of fluor
The number of protons is calculated as the mass number - atomic number = 19 - 9 = 10.
So, look for which of the other atoms have 10 neutrons
2)
element mass number atomic number number of neutrons
Neon-20 20 10 20 - 10 = 10
Oxygen-19 19 8 19 - 8 = 11
Sodium-22 22 11 22 - 11 = 11
Nitrogen-16 16 7 16 - 7 = 9
So, the atom that has the same number of nuetrons as Fluorine-19 is Neon-20
Answer:
If you multiply the miles per hour (30) by 60 (the amount of minutes in an hour) you should get the number for miles per minute. if you multiply that number by 60, you should get the number for miles per second.
The hybridization for C in acetylene, HCCH, or C₂H₂ is 'sp'.
Discussion:
There are three different forms of hybridization -
- sp- The first occurs when two carbon atoms are triple linked.
- sp₂- When two carbon atoms are double-bonded to one another, this is known as sp₂.
- sp₃- When a single bond joins two carbon atoms, this is known as sp₃.
In the case of acetylene(HCCH or C₂H₂):
- The carbon atom requires additional electrons to establish four bonds with hydrogen and other carbon atoms in the synthesis of C₂H₂. One 2s₂ pair is consequently transferred to the vacant 2pz orbital. Each carbon has two sp hybrid orbitals after the 2s orbital in each atom combines with one of the 2p orbitals.
- As a result of the atoms' symmetrical alignment in a single plane, C₂H₂ possesses a linear molecular structure. Due to their lower electronegative nature than Hydrogen atoms, all Carbon atoms are situated near the center of the Lewis structure of C₂H₂.
H-C≡C-H
Therefore, it is concluded from the above discussion that the hybridization type of acetylene is 'sp'.
Learn more about hybridization here:
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<u><em>Answer:</em></u>
2 H₂O ............> 2 H₂ + O₂
<u><em>Explanation:</em></u>
<u>To balance a chemical equation,</u> we need to make sure that the number of moles of each element on the reactants side is equal to the number of moles of that elements on the products side.
<u>For the given equation:</u>
H₂O ............> H₂ + O₂
<u>We need to make sure that:</u>
number of moles of reacting hydrogen = number of moles of produced hydrogen
number of moles of reacting oxygen = number of moles of produced oxygen
<u>1- Let's check the Oxygen:</u>
On the reactant side, we have one mole of oxygen
On the products side, we have two moles of oxygen
To balance this, we can multiply the reactants side by 2.
<u>This will give us:</u>
2 H₂O ............> H₂ + O₂
<u>2- Let's check the Hydrogen:</u>
From part 1, we reached the following equation:
2 H₂O ............> H₂ + O₂
From this equation, we can note that:
On the reactant side, we have 2*2 = 4 moles of hydrogen
On the products side, we have 2 moles of hydrogen
To balance this, we can multiply the hydrogen in the products side by 2
<u>This will give us:</u>
2 H₂O ............> 2 H₂ + O₂
<u>3- Let's check:</u>
The equation we reached in part 2 is:
2 H₂O ............> 2 H₂ + O₂
Checking this equation, we can find that:
We have 2*2 = 4 hydrogen moles on reactants side and 2*2 = 4 hydrogen moles on products side
We have 2 oxygen moles on reactants side and 2 oxygen moles on products side
<u>Therefore,</u>
The equation is balanced
Hope this helps :)