Determine the energy in joules of a photon whose frequency is 3.55 x 10 to the 17 power hz.

E = 23.54 ×10⁻¹⁷ j

Explanation:

Given data:

Frequency = 3.55 ×10¹⁷ Hz

Energy of photon = ?

Solution:

Formula:

E = h. f

E = energy of photon

h = plancks constant (6.63×10⁻³⁴ Kg.m²/s)

f = frequency of photon

Now we will put the values in formula.

E = 6.63×10⁻³⁴ Kg.m²/s × 3.55 ×10¹⁷ Hz

Hz = s⁻¹

E = 6.63×10⁻³⁴ Kg.m²/s × 3.55 ×10¹⁷ s⁻¹

E = 23.54 ×10⁻¹⁷Kg .m²/ s²

Kg .m²/ s² = j

E = 23.54 ×10⁻¹⁷ j

i look it up online and i'll tell you

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles