Why is a bomb calorimeter made of steel?
The modern bomb calorimeter is made of corrosion resisting steel in which the combination Bomb Calorimeter. The bomb calorimeter is an instrument used to measure the heat of reaction at a fixed volume and the measured heat which is called the change of internal energy (ΔE).
What is the formula for bomb calorimeter?
q = -CΔT
In this technique, a sample is burned under constant volume in a device called a bomb calorimeter. The amount of heat released in the reaction can be calculated using the equation q = -CΔT, where C is the heat capacity of the calorimeter and ΔT is the temperature change.
Which type of fuel is used in bomb calorimeter?
The bomb calorimeter consists of pressurized oxygen “bomb” (30 bar), which houses the fuel. A 10 cm fuse wire connected to two electrodes is kept in contact with the fuel inside the bomb. The oxygen bomb is placed in a container filled with 2 l of deionized water.
What is the most powerful conventional bomb?
The MOAB
The MOAB is the most powerful conventional bomb ever used in combat as measured by the weight of its explosive material.
Why is calorimeter used?
A calorimeter is a device used to measure the amount of heat involved in a chemical or physical process. For example, when an exothermic reaction occurs in solution in a calorimeter, the heat produced by the reaction is absorbed by the solution, which increases its temperature.
What is the purpose of calorimeter?
Calorimeters are used to measure the volume and heat produced during a certain time interval. The flow is passed through a tank partly filled with water whose thermal capacity and weight are known before the beginning of the experiment.
How are calorimeters made?
Simple calorimeters are made with a metal container of water, positioned above a combustion chamber. A thermometer is used to measure the heat change in the amount of water. The simplest versions of the device can be made at home using two coffee cups or styrofoam cups, though it is not as accurate as lab equipment.
Why are calorimeters made of metal?
Calorimeters are made up of metal only because they are good conductor of heat and hence the heat exchange is quick which the basic requirement for the working of calorimeter.
Why benzoic acid is used in bomb calorimeter?
Benzoic acid (C6H5CO2H) is often used for this purpose because it is a crystalline solid that can be obtained in high purity. The combustion of benzoic acid in a bomb calorimeter releases 26.38 kJ of heat per gram (i.e., its ΔHcomb = −26.38 kJ/g).
What is the MOAB made of?
The MOAB device bears a charge of 18,700 lbs (8500 kg), composed mostly of H6, which is itself made of RDX. H6 is a standard-issue plastic explosive used by the American military for general-purpose bombs. RDX is a WWII-era plastic explosive, and one of the principal ingredients in Semtex.
Why is copper used in calorimeters?
Copper is a good conductor of heat. Calorimetry is the process of measuring the amount of heat released or absorbed during a chemical reaction. Cu has low specific heat capacity and thus it reaches the equilibrium temperature quickly by absorbing a small amount of heat.
How is GCV calculated?
GCV = 76.56 – 1.3(VM + ash) + 0.0073(VM + ash)2 In the above equation, VM and ash were in weigh percentage on dry basis and GCV was determined in mJ/kg also in dry basis. Kucukbayrak equation assumed that GCV has non linear correlation with VM and ash.
What is GCV and LCV?
We refer to it as the gcv of the fuel. We can subtract from the hcv, an amount of heat required to evaporate the water formed, we can easily find Lower Calorific Value (LCV). Besides, we also know it as Net Calorific Value (LCV) i.e. Net Calorific Value of the fuel.
What is the chemical composition of smoke bomb?
Other smoke bomb compositions produce different products, but the principle is the same: a solid is produced and dispersed into the air, creating a smoke that scatters and blocks light. The sugar will be oxidized to carbon dioxide and water. The nitrogen in the potassium nitrate will be reduced to nitrogen gas.
What makes an atomic bomb so powerful?
The immense destructive power of atomic weapons derives from a sudden release of energy produced by splitting the nuclei of the fissile elements making up the bombs’ core. The U.S. developed two types of atomic bombs during the Second World War. The first, Little Boy, was a gun-type weapon with a uranium core. Little Boy was dropped on Hiroshima.
What is a chemical weapon?
According to the Organisation for the Prohibition of Chemical Weapons (OPCW), “the term chemical weapon may also be applied to any toxic chemical or its precursor that can cause death, injury, temporary incapacitation or sensory irritation through its chemical action.
What is a smoke bomb?
A smoke bomb is a firework designed to produce smoke upon ignition. Smoke bombs are useful to military units, self-defense and pranks. The smoke bomb was first created in 1848, by the inventor Robert Yale. He developed 17th century Chinese-style fireworks and later modified the formula to produce more smoke for a longer period of time.