Explain what a covalent bond is, what types of elements form covalent bonds and give an example of 2 elements that could bond co
valently
1 answer:
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Answer:
1. Yes
2.The solubility of X is 34.55g/L
Explanation:
Solubility of solute refers to how readily a solute will dissolve in a solvent at a particular temperature. Its the amount of moles or grams required to saturate 1dm or 1 Litre of water.
From the problem, when the liquid was drained off and amount of X which didn't dissolve was measured, it weighed 0.008kg, this means out of 0.027kg, 0.027-0.008 actually dissolved
= 0.019kg*1000 = 19g.
if 19g is required to saturate 550mL at 30°C,
then will saturate 1L
= 34.545g will saturate 1Litre
The solubility thus is 34.55g/L
<u>Answer:</u> The volume of permanganate ion (potassium permanganate) is 10.0 mL
<u>Explanation:</u>
To calculate the number of moles for given molarity, we use the equation:
.....(1)
Molarity of ferrous sulfate solution = 0.381 M
Volume of solution = 20.0 mL = 0.020 L (Conversion factor: 1 L = 1000 mL)
Putting values in equation 1, we get:
For the given chemical equation:
By Stoichiometry of the reaction:
5 moles of iron (II) ions (ferrous sulfate) reacts with 1 mole of permanganate ion (potassium permanganate)
So, 0.00762 moles of iron (II) ions (ferrous sulfate) will react with = of permanganate ion (potassium permanganate)
Now, calculating the volume of permanganate ion (potassium permanganate) by using equation 1, we get:
Molarity of permanganate ion (potassium permanganate) = 0.152 M
Moles of permanganate ion (potassium permanganate) = 0.00152 mol
Putting values in equation 1, we get:
Hence, the volume of permanganate ion (potassium permanganate) is 10.0 mL