Learn Chemistry with Sir Ibtihaj Ahmad

27/01/2025

Atomic number of Lithium is 3, what are the number of electrons present in it's nucleus?
a) 3
b) 2
c) 1
d) 0

23/01/2025

How many moles of oxygen molecules are there in 20 dm3 of oxygen gas at STP?

How many moles of oxygen molecules are there in 20 dm3 of oxygen gas at STP?Concept or Self Assessment Exercise 4.1 Stoichiometry Chapter 4 Federal Board New...

23/01/2025

When 100 g magnesium Mg is treated with dilute hydrochloric acid. what volume of hydrogen can be collected at STP?

When 100 g magnesium Mg is treated with dilute hydrochloric acid. what volume of hydrogen can be collected at STP?Example 4.3 Stoichiometry Chapter 4 Federal...

23/01/2025

Calculate the gram molecular mass of a gas which has density of 1.43g/dm3 at STP.

Calculate the gram molecular mass of a gas which has density of 1.43g/dm3 at STP. Example 4.1 Stoichiometry Chapter 4 Federal BoardClass 11th, First Year, 1s...

23/01/2025

https://youtu.be/tEPFuUf21vs

Example 4.1 Stoichiometry Chapter 4 Federal BoardClass 11th, First Year, 1st year Numericals Examples Self assessment exercises solvedFederal Punjab KPK Balo...

01/07/2024

Vital Force Theory and Organic Chemistry

30/06/2024

Atom ⚛️

12/06/2024

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12/06/2024

Quiz Time !

02/06/2024

Example 1.4
How many formula units are present in 125 g of calcium sulphate CaSO4.5H2O.
KpK Chemistry First Year 11th class

Example 1.4 Chemistry KPK FSc Part 1Chemistry Chapter one Stoichiometry Numerical ExampleHow many formula units are present in 125g grams of hydrated copper ...

02/06/2024

Practice Problem 1.2
How many Cu Copper atoms are present in 0.5 moles of copper.
Class 11 KPK Chemistry

Practice Problem 1.2 KPK Chemistry FSc Part 1 First Year, 1st year. Class 11thHow many copper Cu atoms are present in 0.5 moles of copper?