Question

Calculate the no.of moles and molecules in 19.86gm of Pb(NO3)2

Answer 1

Hello friend

Your answer is given below :

___________________________

Given that,

Weight of Pb( NO3)2 => 19.86 gm

Molecular weight. => 331 u

We know that,

No. Of moles = given weight / mole.Weight

=> 19.86 / 331

=> 0.06

And

No. Of molecules=avagadro no. X no. Of moles

=> 6.023 x 10 ^23 x 0.06

=> 0.36138 × 10^23

=> 3.6138 × 10^22


So,

The no. of moles = 0.06

And no. of molecules = 3.6138× 10^22

_________________________________

Have a nice day friend


✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️

Answer 2

HEYAmate here's the answer Mark as brainliest pleaseeeeee follow up