Questions

We know that,

Mass of Carbon = 12 gms

Mass of Oxygen = 16 gms = O2 => 16 * 2 = 32 gms

=> Mass of 1 mole of CO2 = 12 + 32 = 44 gms.

Economics is the study of how society manages its scarce resources i.e, Limited wants & unlimited resources.

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload.

The law of conservation of mass states that in any closed system the mass of the system is neither created nor destroyed over time i.e, the mass cannot be changed overtime.

Hence, the given statement is true.

Ribosomes are present in prokaryotic cells. These are organelles which consist of two subunits. They are present in both Eukaryotic and Prokaryotic cells. They are made up of RNA and proteins and present in the cytoplasm and on the membranes and are involved in protein synthesis.

It is the letter 'e', that is the first on earth, the second in heaven.

It appears twice in a week, that appears once in a year.

The Capital city of Ethiopia is Addis Ababa.

Countries and Capital cities ::

Angola  -  Launda

Burundi  -  Bujumbura

Chile  -  Santiago