The average atomic mass of Sn is 118.71 g/mol
the percentage of heaviest Sn is 5.80%
the given mass of Sn is 82g 
The total  moles of Sn will be = mass / atomic mass = 82/118.71=0.691
Total atoms of Sn in 82g = 
the percentage of heaviest Sn is 5.80%
So the total atoms of 
 = 5.80% X 
Total atoms of 
=
 atoms
the mass of 
 will be = 
 
        
             
        
        
        
A. electron. The nucleus has protons and neutrons, quark is the particle which forms protons and neutrons.
        
             
        
        
        
Answer:
The final temperature of the system is 27.3°C.
Explanation:
Heat lost by aluminum = 3.99 × 0.91 × (100-T)
                                      = 3.631 (100-T) 
Heat gained by water = 10 × 4.184 × (T-21)
                                     = 41.84 (T-21)
As,
                                 Heat gained = Heat loss
                           or, 3.631(100-T) = 41.84(T-21)
                           or,363.1 -  3.631 T = 41.84 T - 878.64)
                           or, (41.84+ 3.631) T = 878.64 +363.1 
                           or  T= 
                          or, T = 27.3°C
Hence the final temperature is 27.3°C.
 
        
             
        
        
        
An intensive property does not change when you take away
some of the sample. The procedures that a student could use to examine the
intensive property of a rectangular block of wood are the hardness, color,
density and molecular weight.
 
        
             
        
        
        
A. A diagram showing the effects of temperature and pressure on  phase
Explanation:
A phase diagram is a diagram that shows the effects of temperature and pressure on phase. 
- A phase diagram shows how different substances are transformed from one form to another. 
 - The transformation is an interplay between pressure and temperature. 
 - The phase graph represents physical state changes. 
 - A phase change is made up of pressure on the y-axis and temperature on the x - axis. 
 
Learn more: 
Phase change brainly.com/question/1875234
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