mole concept questions

What is Avogadro's number and what is its significance ? How is the mole concept useful in calculations based on chemical equations ?

the concept of sustainble agriculture lies in

The concept of stationary orbits was proposed by

What is conception? Name two assisted conception methods.

The concept of antibiosis was proposed in 1889 by:

Which of the following statements regarding the concept of resonance is not correct?

Give the three key factors of the modern concept of evolution.

Explain the molecular concept of different types of modified alleles.

Acidity of BF_(3) can be explained on ths basis of which of the follwoing concepts? (A)Arrhenius concept (B)Bronsted - Lowry concept (C)Lewis concept (D)Bronsted - Lowry as well as Lewis concept

Huygens concepts of secondary wavelets