calculate the mass in grams of a sample of S containing 2.01×10^24 atoms
Answers
- A sample of sulphur has 2.01 × 10²⁴ atoms .
- The mass in gram of sample .
Given that A sample of Sulphur has 2.01 × 10²⁴ atoms . And we need to find the mass of the sample . We know that the molecular mass of Sulphur is , 32 g . Therefore ,
Now we know that , we can find the number of moles as ,
Also ,
From above two ,
so that ,
Hence the mass in grams of Sulphur is 106.66g .
Answer:
★ Given :
A sample of sulphur has 2.01 × 10²⁴ atoms .
★ To Find :
The mass in gram of sample .
★ Solution :
⭐ Given that A sample of Sulphur has 2.01 × 10²⁴ atoms .
⭐ And we need to find the mass of the sample .
⭐ We know that the molecular mass of Sulphur is , 32 g .
Therefore ,
➡ Mass of Sulphur = 32g
We know that :-
- n = Given weight / Molecular weight
Now we know that , we can find the number of moles as ,
- n = number of particles / avogrado′s number
☀ ☀ ☀ given weight / molecular weight = number of particles / avogrado's number ☀ ☀ ☀
➡ Weight / 32g = 2.01 x 10^24 / 6.022 x 10^23
➡ Weight / 32g = 10/3
➡ Weight = 10/3 x 32g
➡ Weight (Sulphur) = 106.66 grams