The molecular formula for elemental sulphur is S8. In a sample of 5.12 g of sulphur: How many moles of sulphur are present? - Chemistry

The molecular formula for elemental sulphur is S₈. In a sample of 5.12 g of sulphur:

How many moles of sulphur are present?

संख्यात्मक

1 molecule of sulphur S₈ = [32 x 8] = 256 g

Moles of (S₈) in 256 g = 1

∴ Moles of (S₈) in 5.12 g = `1/256 xx 5.12`

= 0.02

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पाठ 5: Mole concept and Stoichiometry - Exercise 5B [पृष्ठ ८४]

पाठ 5 Mole concept and Stoichiometry
Exercise 5B | Q 22.1 | पृष्ठ ८४

Calculate the percentage of water of crystallization in CuSO₄.5H₂O

(H = 1, O = 16, S = 32, Cu = 64)

Fill in the following blanks :

0.5 mole of calcium element has a mass of ............... .

Calculate the mass in grams of 0.17 mole of hydrogen sulphide, H2S. (Atomic masses : H = 1 u, S = 32 u)

Define the term Relative atomic mass.

What do you understand by the term mole? How many elementary units are in one mole of a substance?

Fill in the blank.
One a.m.u. is the mass of ______ atom of C^₁₂.

Calculate the number of moles of methane in 0.80 g of methane.

One mole of any gas occupies ______ ml at S.T.P.

Calculate the number of moles in 27g of Al.

Fill in the missing data in the Table