Question

Find the number of copper atoms present in 10 g of 22 carat gold.
(22 carat gold means 22 out of 24 is gold and the rest is copper)
(Atomic mass of copper = 63.5u)
​

Answer 1

HELLO

HERE IS UR ANSWER

⬇️⬇️⬇️⬇️⬇️

first of all, find percentage of copper present in 22 carat gold.

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 %

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 % now, weight of copper in 10g of 22 carat gold = 25/3 % of 10g = 25/3 × 10/100

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 % now, weight of copper in 10g of 22 carat gold = 25/3 % of 10g = 25/3 × 10/100 = 10/12 g

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 % now, weight of copper in 10g of 22 carat gold = 25/3 % of 10g = 25/3 × 10/100 = 10/12 g now, number of copper atoms in (10/12)g = number of mole of copper × Avogadro's number

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 % now, weight of copper in 10g of 22 carat gold = 25/3 % of 10g = 25/3 × 10/100 = 10/12 g now, number of copper atoms in (10/12)g = number of mole of copper × Avogadro's number = given weight/atomic mass × 6.023 × 10²³

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 % now, weight of copper in 10g of 22 carat gold = 25/3 % of 10g = 25/3 × 10/100 = 10/12 g now, number of copper atoms in (10/12)g = number of mole of copper × Avogadro's number = given weight/atomic mass × 6.023 × 10²³ = (10/12)/63.5 × 6.023 × 10²³

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 % now, weight of copper in 10g of 22 carat gold = 25/3 % of 10g = 25/3 × 10/100 = 10/12 g now, number of copper atoms in (10/12)g = number of mole of copper × Avogadro's number = given weight/atomic mass × 6.023 × 10²³ = (10/12)/63.5 × 6.023 × 10²³ = (10 × 6.023)/(12 × 63.5) × 10²³

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 % now, weight of copper in 10g of 22 carat gold = 25/3 % of 10g = 25/3 × 10/100 = 10/12 g now, number of copper atoms in (10/12)g = number of mole of copper × Avogadro's number = given weight/atomic mass × 6.023 × 10²³ = (10/12)/63.5 × 6.023 × 10²³ = (10 × 6.023)/(12 × 63.5) × 10²³ = 0.079 × 10²³

first of all, find percentage of copper present in 22 carat gold. percentage of copper in 22 carat gold = (24 - 22)/24 × 100 = 100/12 = 25/3 % now, weight of copper in 10g of 22 carat gold = 25/3 % of 10g = 25/3 × 10/100 = 10/12 g now, number of copper atoms in (10/12)g = number of mole of copper × Avogadro's number = given weight/atomic mass × 6.023 × 10²³ = (10/12)/63.5 × 6.023 × 10²³ = (10 × 6.023)/(12 × 63.5) × 10²³ = 0.079 × 10²³ = 7.9 × 10²¹

հօթҽ íԵ հҽlթs վօմ