<span>When one talks about ppm in a liquid solution someone means mg/L so we would not be using the density. This usually means ug/g or mg/kg
0.115 g Na^+ * 10^6 ug/1 g = 115000 ug/g
4.55 L * 1000 mL/1L = 4550 mL
Concentration of Na^+ in ppm:
115000 ug/g /4550 mL = 25.27 pm of sodium ion</span>
Answer:
Your answer is 5.63 × 10^14 Hz
We know the value of the speed of light and we are given the wavelength. All we have to do is rearrange the equation to solve for the frequency:
frequency: v = c/ λ
Now just plug in the given values:
v = 3.00 × 10 ^ 8 / 530 × 10^-9
v = 5.66 × 10 ^ 14 Hz
I hope this helps you.
