Teachoo Questions
Mole Concept - Numericals Important
Difference between Atoms and Molecules
Difference between Anion and Cation
Gram Molecular Mass Important
Valency Chart (Valency Table) Important
What is Atomicity? Important
Atomic Mass Unit (amu)
Gram Atomic Mass Important
How do Atoms exist? Explain Important
Why do Atoms combine? Important
How are Ions formed?
Why ions are more stable than atoms Important
Difference Between Atomic Mass and Atomic Number Important
Atoms are Divisible.. really? Important
Which have same number of Atoms
Which contains greatest number of Atoms
How many moles of magnesium phosphate will contain Important
Which sample contains the largest number of atoms
Which has maximum number of molecules
How many atoms of H and S are contained You are here
How do we know the presence of atoms if
Modern Atomic Symbols are based on
Identify the pairs which are not of Isotopes? Important
The reaction in which two compounds exchange their ions to Important
An electrolyte which completely dissociates into ions is Important
The formula unit mass of a substance is the Important
Teachoo Questions
Last updated at April 16, 2024 by Teachoo
Answer
1 mole of a substance = 1 gram atom
In this case
H 2 S has 2 H atoms and 1 S atom
1 mole of H 2 S → 2 gram atoms of H and 1 gram atom of S
So, 0.4 moles of H 2 S →
2 x 0.4 = 0.8 gram atoms of H
1 x 0.4 = 0.4 gram atoms of S
