#7: Determine the molecular formula of a compound that is made of 47.2% K, 14.5% C and 38.5% O if its molar mass is 166.2 g/mol. I will give Brainliest to best answer + SHOWS WORK!! fake answers will be reported and deleted. <3

Refer to the attachment!

Hope it helps you <3

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

a chemical reaction

explanation: