Explanation:
Suppose in 100 g of alloy contains 90% titanium 6% aluminum and 4% vanadium.
Mass of titanium = 90 g
Moles of titanium = 
Total number of atoms of titanium ,
Mass of aluminum = 6 g
Moles of aluminium = 
Total number of atoms of aluminium,
Mass of vanadium = 4 g
Moles of vanadium= 
Total number of atoms of vanadium
Total number of atoms in an alloy = 
Atomic percentage:

Atomic percentage of titanium:
:
Atomic percentage of Aluminium:
:
Atomic percentage of vanadium
:
First step: The mass of zinc in the yellow zinc sample can be calculated with the help of percentage (given) in the sample. After that, mass of copper is determine by the subtracting the mass of zinc from the total mass of zinc in the given sample.
Thus,
Mass of zinc in 34% zinc sample = 
=
zinc
Mass of zinc in 37% zinc sample = 
=
zinc
Now,
mass of copper in 34% zinc sample =
= 
mass of copper in 37% zinc sample = 
=
Thus, the range of mass of copper is
to 
Second step:
34% zinc sample consist of 66% copper (100-34= 66%)
37% zinc sample consist of 63% copper (100-37=63%)
Mass of zinc = 
= 
Mass of zinc =
= 
Thus, the range of mass of zinc is
to 
Answer:
bro both are same to same
Explanation:
If you dail any number
Answer:
pure covalent bond ( inter atomic bond)
Explanation:
pure covalent exists between atoms of the same kind..two nitrogen atoms have the same electronegativity values hence cancel out making it a pure or non polar covalent bond
A Lewis structure is a visual representation of the bonds between atoms and it shows the lone pairs of electrons in molecules. This structure is also referred as Lewis dot diagram. Resonance structure are multiple Lewis structure that describe a single molecule.<span>
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