Author Question: Surface tension is present in a container with which of the following? a. Oxygen and hy-drogen c. ... (Read 56 times)

Engineer · **on:** Jul 16, 2018

Surface tension is present in a container with which of the following?

a. Oxygen and hy-drogen c. Water and chlorine
b. Water and mercury d. Water and salt

Question 2

Forces at the molecular interface between oil and water are known as _____ forces.

a. van der Waals c. Cohesive
b. Hydrostatic d. Adhesive

triiciiaa · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B
When water and mercury are mixed together, they will separate into two distinct liquids because of surface tension. Oxygen and hydrogen will combine to form water. Both salt and chlorine will dissolve in water easily.

Answer to Question 2

ANS: C
Surface tension is generated by the cohesive forces of molecules at a gas-liquid interface or at the interface of two immiscible liquids, such as oil and water. Adhesive forces are attractive forces between two different kinds of molecules, and van der Waals forces are physical intermolecular forces that cause molecules to be attracted to each other.