You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Solubility Product

Iron pyrites ...

Question

Iron pyrites has formula $F e S_{2} . (F e = 56; S = 32)$ . What is the mass of sulfur contained in 30 grams of pyrites?

16 g

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

32 g

No worries! We‘ve got your back. Try BYJU‘S free classes today!

20 g

No worries! We‘ve got your back. Try BYJU‘S free classes today!

24 g

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 16 g
Molecular weight of $F e S_{2} = 56 + 2 (32) = 120$ g/mol.

One mole (120 g) of $F e S_{2}$ will contain $2 \times 32 = 64$ g of $S$

30 g of $F e S_{2}$ will contain $\frac{30}{120} \times 64 = 16$ g of $S$ .

Hence, the mass of sulfur contained in 30 grams of pyrites is 16 g.

Suggest Corrections

Similar questions

Q. How many gram of iron pyrite

(F e S_{2})

should be burnt completely to produce

S O_{2}

gas needed to decolorize completely 100ml, 0.12M,

K M n O_{4}

solution in acidic medium. [Fe= 56]

Q. Calculate the mass of a coal sample in kg containing 0.05 % mass of iron pyrite

(F e S_{2})

that can produce 44.8 litres of

S O_{2}

at 1 atm and

273 K

with 40 % reaction yield.

F e S_{2} + O_{2} \to F e_{2} O_{3} + S O_{2}

(Molar mass of Iron =

56 g/mol

; molar mass of Sulphur =

32 g/mol

)

Q. Pyrite (

F e S_{2}

), crystallizes in a cubic unit cell with a cell edge of

0.540 nm

. The density of pyrite is

5.02 {g/cm}^{3}

. How many

F e^{2 +}

and

S_{2}^{2 -}

ions are present in a single unit cell? (

S = 32 u, F e = 56 u

)

Q. 1 gram of Iron

(F e)

contains ______ atoms.

(Molecular Weight of

F e = 56

g/mole)

Q. A hydrate of iron

(I I I)

thiocyanate

F e (S C N)_{3}

, was found to contain

19 % H_{2} O

. What is the formula of the hydrate.
(Given: Molecular weight of

F e = 56 u, S = 32 u

)

Join BYJU'S Learning Program

Iron pyrites has formula FeS2.(Fe=56;S=32). What is the mass of sulfur contained in 30 grams of pyrites?

The correct option is A 16 gMolecular weight of FeS2=56+2(32)=120 g/mol.One mole (120 g) of FeS2 will contain 2×32=64 g of S30 g of FeS2 will contain 30120×64=16 g of S.Hence, the mass of sulfur contained in 30 grams of pyrites is 16 g.

Iron pyrites has formula $F e S_{2} . (F e = 56; S = 32)$ . What is the mass of sulfur contained in 30 grams of pyrites?