Answer:
Mass of CuCl₂ = 23.125 g
Explanation:
Given data:
Number of moles of CuCl₂ = 0.172 mol
Mass of CuCl₂ = ?
Solution:
First of all we will calculate the molar mass of CuCl₂.
Molar mass of CuCl₂ = 63.546 + 2(35.5)
Molar mass of CuCl₂ = 134.45 g/mol
Formula:
Number of moles = mass / molar mass
Mass = Number of moles × molar mass
Mass = 0.172 mol × 134.45 g/mol
Mass = 23.125 g
Answer:
C. Destructive interference
Explanation:
<em>Destructive interference</em> is when there are two waves <u>with the same frequency</u>, and the peaks of one wave (the highest points) line up with the valleys (the lowest points) of the second one.
Constructive interference would cause the sound to be louder.
Absorption and reflection are interactions that would not take into account the fact that the headphones produce sounds.