0.0847L
Explanation:
The following data were obtained from the question:
C1 = 2.46 M
V1 =?
C2 = 0.758 M
V2 = 275 mL = 275/1000 = 0.275L
Using the dilution formula C1V1 = C2V2, we can confidently calculate the volume of the original solution as follows:
C1V1 = C2V2
2.46 x V1 = 0.758 x 0.275
Divide both side by 2.46
V1 = (0.758 x 0.275) /2.46
V1 = 0.0847L
Therefore, 0.0847L is needed
Speed = v = 3×10⁸ m/s
Wavelength = λ = 5.8×10⁻⁷ m
Frequency = f
v = fλ
Hence,
f = v/λ
f = 3×10⁸ / 5.8×10⁻⁷
f = 0.517×10⁸⁺⁷
f = 5.17×10¹⁴ Hz
i hope this will help but if im wrong then it will be 5.16x10¹⁴