What is the frequency and energy per quantum (in joules) of :
(a) a gamma ray with a wavelength of 0: 600 pm,
(b) a microwave with a wavelength of 2.50 cm?

(a) f = 5.00 × 10²⁰ Hz, E = 3.32 × 10⁻¹³ J;

(b) f = 1.20 × 10¹⁰ Hz, E = 7.96 × 10⁻²⁴J.

What's the similarity between a gamma ray and a microwave?

Both gamma rays and microwave rays are electromagnetic radiations. Both travel at the speed of light at in vacuum.

where

(a)

Convert all units to standard ones.

.

The unit of shall also be standard.

.

For each particle,

,

where

.

(b)

Try the steps in (a) for this beam of microwave with

Expect the following results:

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