Which of the following is not an example of a molecule? a. o3 b. koh c. h2s d. mn

Answer : The option is, (D) Mn

Explanation :

Pure substance : It is defined as a substance that is made by the combination of only one type of atom or only one type of molecule.

Compound : It is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

Element : It is a pure substance which is composed of atoms of similar elements.

Molecule : It is the smallest particle in the chemical compound or chemical element that has the same chemical properties of that compound or element.

Option A :

is molecule of element.

Option B :

is molecule of compound.

Option C :

is molecule of compound.

Option D :

is and element.

Hence, the element Mn is not an example of a molecule.

b.

the accuracy of the data.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.