Two gaseous reactants A and B were placed in a reaction vessel in a dim room. the reaction was known to be photocatalytic. They react as shown. A + B ---> C + D. ∆H= -210Kjmol-¹

describe the effect on the rate of reaction when the conditions are changed as follows:

(a) the pressure is halves
b) the temperature is increased
c) The reaction is conducted in a bright room
D) The concentration of A is doubled​

Is the flow of energy during vaporizing more like the flow during melting or during freezing

Which word refers to the smallest functional unit of living thing

Dona wrote the characteristics of two types of galaxies as shown below: type a: has a large flattened core type b: does not have a regular shape which statement is correct? type a is an irregular galaxy and type b is a lens galaxy. type a is a lens galaxy and type b is an irregular galaxy. type a is a spiral galaxy and type b is an elliptical galaxy. type a is an elliptical galaxy and type b is a spiral galaxy.