Answer:
1 mole of iron =6.023×10^23 particles
1 particles of iron=1/6.023×10^23 mole
7.46×10^25 particles =1/6.023×10^23×7.46×10^25
=1.238×10^48 mole is a required answer.
The orbits of the plants are fixed around the sun by the suns gravitational pull
You take the moles divided by the liters to get the molarity.
Every single person has their own unique DNA so with this, if they find any fingerprints they'll be able to track them down easily
