Question

an alloy consists of 13 parts of copper to 7 parts of zinc and 5 parts of nickel. what is the percentages composition of the alloy solution

Answer 1

Total parts = 13 + 7 + 5 = 25 .

Percentage composition of copper = 13/25 × 100 = 52%

Percentage composition of zinc = 7/25*100=28%

Percentage composition of nickel = 5/25×100 = 20% .

Answer 2

Since this question is from Chemistry of Chapter - Is matter around us pure?

Parts of Copper = 13
Parts of Zinc = 7
Parts of Nickel = 5

Total part of Alloy = 13+7+5 = 25

Percentage of Copper(Cu) =( Value of Component/ Total Value x 100)%

$percentage \: = \frac{13}{25} \times 100$
$percentage \: = 13 \times 4 = 52\%$
Again,
Percentage of Zinc(Zn) = 7/25 x 100 %

$percentage \: = 7 \times 4 = 28\%$
Now,

Percentage of Nickel (Ni) = 5/25 x 100 %

$percentage \: = 5 \times 4 = 20\%$


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