You have 4.872 x 1034 atoms of copper. how many moles is this? 7.666 x 10^32 mol 2.933 x 10^58 mol 1.237 mol 8.093 x 10^10 mol

 the moles of copper  is   8.093   x10^10  moles

calculation

The moles of copper   is calculated using the Avogadro's constant.

That  is According to Avogadro's law    

                                 1  mole  = 6.02 x 10^23 atoms

                                   ? moles = 4.872 x10^34 atoms

by  cross multiplication

=[( 1  mole  x 4.872 x10^34 atoms) / 6.02 x10^23  atoms]

      = 8.093 x10^10  moles

a is the correct answer

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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