How many different elements are in ammonium hydroxide (nh4oh)?

There are 3 different types of elements in the given compound.

Explanation:

Elements are defined as the smallest unit which cannot be further divided. These have same types of atoms. For Example: Carbon (C), Hydrogen (H), etc..

For a given chemical compound

There are 3 different kinds of elements which are nitrogen (N), hydrogen (H) and oxygen (O).

In 1 mole of ammonium hydroxide, 1 mole of nitrogen atoms, 5 moles of hydrogen atoms and 1 mole of oxygen atom is present.

Thus, there are 3 different types of elements in the given compound.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

it's c (engineer's do their work with mechanical stuff not on any living being)