NACL, or salt, is an ionic compound made up of a cation from a base and an anion from an acid. (Water being the base.) Your answer would be the last option, "Formed due to reaction of acid with water."
Rainforest with lots of moisture and humidity is you answer
Answer:
2.5 mol/L
Explanation:
We'll begin by calculating the number of mole in 7 g of KOH. This can be obtained as follow:
Mass of KOH = 7 g
Molar mass of KOH = 39 + 16 + 1
= 56 g/mol
Mole of KOH =?
Mole = mass /molar mass
Mole of KOH = 7 / 56
Mole of KOH = 0.125 mole
Next, we shall convert 50 mL to L. This can be obtained as follow:
1000 mL = 1 L
Therefore,
50 mL = 50 mL × 1 L / 1000 mL
50 mL = 0.05 L
Finally, we shall determine the molarity of the KOH solution. This can be obtained as follow:
Mole of KOH = 0.125 mole
Volume = 0.05 L
Molarity of KOH =?
Molarity = mole / Volume
Molarity of KOH = 0.125 / 0.05
Molarity of KOH = 2.5 mol/L
Thus, the molarity of the KOH solution is 2.5 mol/L
Answer:
Bonding electron pairs
Explanation:
Sulfate (SO₄²⁻)
Valence electrons of sulfur = 6
Valence electrons of oxygen = 6
Charge = 2 (Negative which means that the electrons are being added)
The total number of the valence electrons = 6 + 4(6) + 2 = 32
The Lewis structure is drawn in such a way that the octet of each atom and duet for the hydrogen in the molecule is complete. So,
The Lewis structure is:
<u>Since, all the electrons pairs around the central atom, sulfur is bonded. So, the electron pairs are bonding electron pairs.</u>
The answer is number three because when electrons get excited they move up to the higher energy levels, and they emit light as the come back down to the lower quanta.