The highly reactive oh radical (a species with an unpaired electron) is believed to be involved in some atmospheric processes. the bond energy for the oxygen-to-hydrogen bond in oh is 460 kj/mol. what is the longest wavelength (in nm) of radiation that can bring about the following reaction:
oh (g) > o (g) + h (g)

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

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

the answer would be a

elements make up everything, and they combine to make compounds.

the answer is c