A molecule of ammonia `(NH_(3))` has

Calculate the number of moles and molecules of ammonia (NH_3) gas in a volume 67.2 dm3 of it measured at STP.

The mass of 5 moles of ammonia (NH_(3)) is ………….

What is the number of molecules present in 1-5 mole of ammonia (NH_(3)) ?

The mass of 11.2 L of ammonia (NH_(3)) gas at NTP is :-

Give reasons for the following: A molecule of ammonia has one lone pair of electrons.