Part 1: a sample of silver (ag) has a mass of 31.78 g. a. what is the molar mass of silver? b. how many moles of silver are in this particular 31.78 g sample? c. how many atoms of silver are in this same sample? show work! you!

 The   molar  mass of   silver = 107.87 g/mol  ( from periodic table)

 The   moles of  silver   is 0.2946  moles

calculation

moles =mass÷  molar   mass

    = 31.78 g  ÷ 107.87 =0.2946 moles

The  number of atoms  of silver  that are  in this sample is 1.773 x 10²³  atoms

  calculation

According  to Avogadro's  law   1  mole  =   6.02 x 10²³  atoms

                                                  0.2946   moles= ? atoms

by  cross  multiplication

= [ (0.2946  moles x 6.02 x 10²³ ) / 1 mole]  = 1.773 x 10²³ atoms

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: