Question

An alloy conyain 40% copper ,32%nickel and zinc find the mass of zinc in one kg of the alloy

Answer 1

Here's your answer!!

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Amount of alloy=1 kg

Quantity of copper in alloy =40 %

Quantity of Nickel in alloy =32 %

So,

Quantity of Zinc,

=> 100-(Amount of copper +Nickel)

$= > 100 \%- (40 \% + 32\%)$

$= > 100\% - 72\%$

$= > 28\%$

Hence,

Quantity of Zinc in alloy=28%

Now,

Mass of Alloy =1 kg

So,

Mass of Zinc =

=>28/100

=>.28 kg

Hence,

Weight of Zinc in 1 kg of alloy is ,".28 kg".

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Hope it helps you!! :)

Answer 2

question: An alloy contain 40% copper ,32% Nickle, and zinc . Find the mass of zinc in one kg of the alloy.

solution:
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given , mass of alloy = 1kg

quantity of copper in alloy

= 40%

= 40% of 1kg

= 40 ×1 / 100 = 0.4kg

quantity of nickle in alloy = 32%

32% of 1kg = 0.32 × 1 = 0.32kg

total quantity of copper, Nickel and zinc = 1kg

copper + nickle + zinc = 1kg

0.4kg + 0.32kg + zinc = 1kg

0.72kg + zinc = 1kg

zinc = 1kg - 0.72kg

zinc = 0.28kg

Answer:
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mass of zinc in alloy = 0.28kg
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