Question

an alloy contains 30% copper , 35 % nickel and the rest is zinc. Find the mass of zinc is 2kg of the alloy

Answer 1

Answer:

mass of zinc is 700 gram or 0.7 kg

Step-by-step explanation:

35/100% × 2000gram = 35 ×20 gram =700 gram

Answer 2

Answer: PLEASE BRAINLIEST MY ANSWER

700 g of Zn present in 2kg of alloy.

Step-by-step explanation:

According to the question,

Let the alloy contains 30% copper, 35% nickel and

rest in zinc.

Zn=100According to the question,

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

rest in zinc.

Zn=100−30−35

= 35%

∴ 35% of zinc present in alloy

Since 1kg=1000gm

Therefore,

0.30×1000=300 g of Cu ;

0.35×1000= 350 g of Ni ;

0.35×1000= 350 g of Zn .

Hence,  2kg

2000g×0.35 = 700 g of Zn present in 2kg of alloy.