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

your answer is c) plasma

~*"auba14"*~

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.