+3
Hence, the magnetic behaviour of the complex is paramagnetic. The oxidation number of the central metal atom: The oxidation number of the metal iron is +3.
<span>causing disruption or annoyance through being unwelcome or uninvited.</span>
Answer:
2.78 x 10⁻² M
Explanation:
Step 1:
Data obtained from the question.
Volume = 225mL / 1000 = 0.225L
Mass of K₂SO₃•8H₂O = 1.89g
Molarity =..?
Step 2:
Determination of the number of mole of K₂SO₃•8H₂O
This is illustrated below:
Mass of K₂SO₃•8H₂O = 1.89g
Molar mass of K₂SO₃•8H₂O = (39x2) + 32 + (16x3) + 8[(2x1) + 16] = 78 + 32 + 48 + 8[18] = 302g/mol
Number of mole = Mass/Molar Mass
Number of mole of K₂SO₃•8H₂O = 1.89/302 = 6.26x10⁻² mole
Step 3:
Determination of the molarity.
Molarity = mole /Volume
Molarity = 6.26x10⁻² /0.225
Molarity = 2.78 x 10⁻² M
Therefore, the molarity of the solution is 2.78 x 10⁻² M
Answer:
Percentage of silver and sulphur in the compound is 87.08% and 12.91% respectively
Explanation:
Given:
Amount of silver = 29.0 g
Amount of sulphur= 4.30 g
To find:
Percent composition of the compound=?
Solution:
Total Molecule mass = amount of silver + amount of sulphur
Total Molecule mass = 29+4.3
Total Molecule mass = 33.3g
Percentage of silver:
=>
=>
=> 87.08%
Percentage of silver:
=>
=>
=> 12.91%
