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### Difference Between Gibbs Free Energy and Helmholtz Free Energy

// Oct 8th, 2011
Gibbs Free Energy vs Helmholtz Free Energy   Some things happen spontaneously, others do not. The direction of change is determined by the distribution of energy. In spontaneous change, things tend to a state in which the energy is more chaotically dispersed. A change is spontaneous, if it leads to greater...

### Difference Between Enthalpy and Entropy

// Sep 26th, 2011
Enthalpy vs Entropy For the study purposes in chemistry, we divide the universe into two as a system and surrounding. At any time, the part we are interested is the system, and the rest is surrounding. Enthalpy and entropy are two terms describing the reactions taking place in a system and the surrounding. Both...

### Difference Between Adiabatic and Isentropic Processes

// Sep 19th, 2011
Adiabatic vs Isentropic Processes For the purpose of chemistry, the universe is divided into two parts. The part we are interested in is called a system, and the rest is called the surrounding. A system can be an organism, a reaction vessel or even a single cell. The systems are distinguished by the kind of interactions...

### Difference Between Heat Dissipated and Work Accomplished

// Aug 23rd, 2011
Heat Dissipated vs Work Accomplished We use electrical, mechanical or any other type of systems to get done some work. For example, we use the electrical equipment called ‘bulb’ to get light. In a bulb, electrical energy is converted into light energy (or to electromagnetic waves). However, all the electrical...

### Difference Between Signal and Noise

// Aug 10th, 2011
Signal vs Noise Signal and noise are two terms used in electrical engineering and communications. Signal is a time or space varying quantity carrying some information, and noise is an unwanted effect on signal which reduces the visibility of that information. Signal to noise (S/N) ratio is a widely used parameter...

### Difference Between Isolated System and Closed System

// Jul 30th, 2011
Isolated System vs Closed System For the purpose of chemistry, the universe is divided into two parts. The part we are interested in is called a system and the rest is called the surrounding. A system can be an organism, a reaction vessel or even a single cell. There are boundaries between a system and the surrounding....