7) determine the number of tin atoms in 7.5 moles of tin.
the molar mass of tin is 118.71 g/mol

4.5 x 10^24 atoms of tin

Explanation:

We do not need to use the molar mass because we only need to know that 1 mol of something = 6.022 x 10^23 atoms of that thing.

7.5 mol tin x (6.022 x 10^23 atoms/1 mol tin)

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

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