Question

18. An alloy consists of 13 parts of copper, 7 parts of zinc and 5 parts of nickel. Find the percentage
of copper in the alloy.​
pls give answer

Answer 1

Answer:

52%..........................

Answer 2

Step-by-step explanation:

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 100percentage=

25

13

×100

percentage \: = 13 \times 4 = 52\%percentage=13×4=52%

Again,

Percentage of Zinc(Zn) = 7/25 x 100 %

percentage \: = 7 \times 4 = 28\%percentage=7×4=28%

Now,

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

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

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