Answer: in mature it primarily occurs in the fork of water
Explanation: water molecules contain two hydrogen atoms and one oxygen atom
Answer:
0.17×10⁻³ mol
Mass = 0.00476 g
Explanation:
Given data:
Number of molecules of N₂ = 1 ×10²⁰ molecules
Number of moles of N₂ = ?
Mass in gram of N₂ = ?
Solution:
1 mole of any substance contain 6.022×10²³ molecules
1 ×10²⁰ molecules× 1 mol /6.022×10²³ molecules
0.17×10⁻³ mol
Mass in gram:
Mass = number of moles × molar mass
Mass = 0.17×10⁻³ mol × 28 g/mol
Mass = 4.76×10⁻³ g
Mass = 0.00476 g
<h3>
Answer:</h3>
= +0.43 V
<h3>
Explanation:</h3>
The two standard reduction potentials are;
Fe³⁺(aq) + e⁻ → Fe²⁺(aq) E₀ = +0.77 V
Cu²⁺(aq) + 2e⁻ → Cu(s) E₀ = +0.34 V
The overall reaction is;
Fe³⁺(aq) + Cu(s) → Fe²⁺(aq) + Cu²⁺(aq)
To calculate the standard cell potential of the overall reaction, we use the equation;
Ecell = E redu, cathode - E red, anode
From the reaction; Copper lost electrons to form copper ions (Cu²⁺) (Oxidation) while Fe³⁺ gained electrons to form Fe²⁺ (reduction)
Therefore;
E cell = + 0.77 v - (+0.34 v)
= + 0.43 V
Hence, the standard cell potential of the overall reaction is +0.43 V
Answer:
They are located in the equatorial positions
Explanation:
To know this, we need to draw the chair conformation of the cyclohexane.
As you can see in picture 1, we have a cyclohexane with the two methyl in position 1 and 3, both of them with a wedge bond meaning they are in cis position.
The next structure is the chair conformation of the 1,3-dimethylcyclohexane. Facing in cis position they could be either in axial positions (Facing upward) or equatorial positions (Facing to the sides).
Now both of them are in cis position, however, one of them is the most stable conformation. This one would be the equatorial positions. Why is that structure more stable than the axial positions? basically, because when you have a cyclohexane with radicals in position 1 and 3, you can have the 1,3-diaxial interactions which is an interation that is usually repulsive between those substituent. Therefore, this repulsion of the methyls, it's similar to steric hindrance and make this conformation being less stable than the conformation in the equatorial positions, because you can see there are no interaction there and no steric hindrance. Therefore the methyl groups should be located in the equatorial positions to do the most stable conformation. See picture attached.
The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.