Question

2)How many molecules are there in 32 g of O₂?

Answer 1

Answer:

The national Institution of virology established in 1952 in.....

 

Answer 2

O2 is the chemical formula of oxygen

1Mole of substance contains 6.022×10²³

Molar mass of O=16u

Molar mass of O2=32u and

DEFINITION OF MOLAR MASS

The molar mass is known as molecular weight ,is the sum of the total mass in grams of all the atoms that make up a mole of a particular molecule .The unit used to measure is gram per mole .

32g of O2 has molecules =6.022×10²³

6.022×10²³ is an Avogadro's number

Avogadro's number ,(number of units in one mole of any substance (defined as its molecular weight in grams ),equal to 6.02214076×10²³

1molecule of O2 has 2 atoms

Therefore 32g of O2 has atoms=2*6.02×10²³