Answer:
Co(NO3)2 isthe right answer
Explanation:
hope it helped u a lot
You will have 0.06502087426717999 moles of NaCl with 3.8 grams. 1 gram= 0.0171107563861
Answer: 4.80 * 10¹⁴s⁻¹
Explanation:
Speed = Frequency * Wavelength
So:
Frequency = Speed/ Wavelength
Speed of light = 3 * 10⁸ m/s
Frequency = (3 * 10⁸ m/s) / (6.25 x 10⁻⁷m)
= 4.80* 10¹⁴hz
= 4.80 * 10¹⁴s⁻¹
