Essays on Intermolecular

Q1. A 200mm diameter pipeline divides into two smaller pipelines, one being 100mm in diameter and the other being 150mm in diameter. If the velocity in the 100mm pipe is 0.3m/s and that in the 150mm is 0.6m/s, calculate the flowrate in litres/s and the velocity in m/s in the 200mm pipe. [ 13 l/s, 0.413m/s] Solution: Flow Rate = (pi/4)(0.1)2(0.3) + (pi/4)(0.15)2(0.6) = 0.01296 cubicmeters/sec = 12.96 l/sec. (ans.). Velocity = (Flow Rate)/(Area) = [0.01296]/[(pi/4)(0.1)2] = 0.4125 m/s. Q2. If the specific volume of water is 0.001251 m3 /kg. calculate:

The mass and weight ...

The term organic semiconductor is used for denoting the class of materials that are based on carbon, which takes part in semiconducting characteristics. And therefore, many of the attractive optoelectronic features exhibited in organic semiconductors emerge from the properties of carbon atoms. Organic semiconductor materials fall into two broad categories, i.e., low-molecular weight organic materials and polymers (Ishii et al. 2009). The individual energy properties are different as can be seen below. The bonding nature manifested in organic semiconductors is fundamentally dissimilar from those seen in their inorganic counterparts. The solid molecular crystals of organic semiconductors are bonded with ...

Kinetic theory of matter tries to explain all molecules in terms of motion. The theory posits that every substance consists of many small particles referred to as molecules. Substances in this case are called matter and are in three forms; solids, liquids, and gases. Solids have molecules that are closer to each other by intermolecular forces. Liquids on the other hand have molecules slightly far apart with gases the furthest apart. Furthermore, according to this theory all the molecules are in constant random motion referred to as Brownian motion (Chang, 2004).

The study of heat relates to kinetic theory ...