Question

A chemical compound contains 26% of zinc , 20% of copper and rest is Nickel find in grams the quantity of each content in the sample of 1 kg.​

Answer 1

Answer:

According to the question,

Let the alloy contains 45% nickel, 25% copper and

rest in zinc.

Zn=100−45−25

=30%

Since 1kg=1000gm

Therefore,

45×1000=450gofNi;

25×1000=250gofCu,

30×1000=300gofZn

Hence,  3kg

3000g×3=900gofZn present in 3 kg of alloy.

Answer 2

Total weight of chemical compound = 1 kg or 1000 gram.

Zinc = 26%

Copper = 20%

Nickel = ?

So , we will find zinc first .

$\frac{26}{100}×1000=260 \: grams$

Zinc = 260 grams

Now , we will find copper .

$\frac{20}{100}×1000=200 grams$

Copper = 200 grams

As , Nickel is unknown and we have already got 2.

So, Nickel = 1000-(260+200) gram

=> 1000-460 gram

=> 540 grams

So, Nickel = 540 grams.

Answer :-

Zinc = 260 grams

Copper = 200 grams

Nickel = 540 grams.

Hope it helps friend !

#Be brainly