Answer
MnO₄ + 2H⁺ +3NO₂⁻ →3NO₃⁻ + Mn²⁺ +H₂O
Explanation
This is a redox reaction (oxidation-reduction reaction) which involves the transfer of electrons between two species. i.e
Mn + 6e⁻→Mn²⁺ (reduction)
3N³⁺- 6e⁻→3Mn⁵⁺(oxidation)
The answer should be answer B. More than three times the sun. I hope this helped! :)))
1 μL = 10^-6 L by definition
So...
82 μL = 82x10^-6 L = 8.2x10^-5 L
Determining the volume of water displaced by the crown and using the gold density to determine the mass of the crown equals the mass got from weighing the crown on a weighing machine. if the mass matches the mass got from the weighing machine then the crown is made of pure gold if otherwise, the gold is not pure.
