Answer:
1.0 L
Explanation:
Given data
- Initial volume (V₁): 0.35 L
- Initial concentration (C₁): 2.0 M
- Final concentration (C₂): 0.70 M
John and Alex prepared a diluted solution from a concentrated one. We can find the volume of the diluted solution using the dilution rule.
C₁ × V₁ = C₂ × V₂
V₂ = C₁ × V₁ / C₂
V₂ = 2.0 M × 0.35 L / 0.70 M
V₂ = 1.0 L
The Planck’s Equation states that
E = hv
E stands for energy measured in Joules
v stands for frequency measured in s^-1 or Hertz (Hz)- 1Hz .
h is Planck’s constant which is equivalent to 6.626x10-34 J.s
The Planck's equation states that the energy of a photon, is directly proportional to its frequency (v), by a constant factor (h).
Given:
E=3.2 * 10^-24 J
h= 6.626x10-34 J.s
Now we know that
E=hv
Thus substituting the given values we get
v=3.2 * 10^-24 /6.626x10-34
v=48 x 10^9 s^-1
I believe the correct response would be A. Energy being absorbed, as temperature increase must for instance occur for the reaction to occur, this increase in temperature for the reacting substances indicates energy being absorbed as the reaction proceeds.
A homogeneous mixture<span> has the same uniform appearance and composition throughout.
</span>A heterogeneous mixture<span> consists of visibly different substances or phases.</span>
