Question: (a) The energy released in the explosion of 1.00 molof TNT is 340 mJ. The molar mass of TNT is. What weight of TNT is0.227kJ/molneeded for an explosive release of 1.80×1014J? (b) Can you carry that weight in a backpack, or is a truck or train required? (c) Suppose that in an explosion of a fission bomb, 0.080%of the fissionable mass is converted to released energy. What weight of fissionable material is needed for an explosive release of 1.80×1014J? (d) Can you carry that weight in a backpack, or is a truck or train required?

Short Answer

Expert verified

Answer

  1. The weight of the TNT explosive is1.2×107kg .
  2. This amount of weight cannot be carried in a backpack, it would require a train or a truck to carry it.
  3. The fission bomb of 2.5 kg would release the same amount of energy.

This bomb could be carried easily in backpack

Step by step solution

01

Given Data

One mol of TNT has a molar mass of 0.227kg.

Energy released per unit molEreleased=3.40MJ/mol

Required energy to be released from the bomb is 1.8×1014J.

02

Significance of TNT

TNT is still often utilised in the military and, less frequently, in industry. It is a component of many explosives and weapons, including grenades, bombs, and artillery shells. TNT is used in industry to make dyes, photographic chemicals, and for underwater blasting.

03

Step 3(a): Determine the mass required for TNT bomb.

One mole of TNT releases 340 MJ of energy.

Required energy released in the bomb 1.8×1014J.

No. of moles required to release this energy is0.227kg

n=1.8×1014J3.40×106J/Mol=0.53×108mol

One mole weight 0.227 kg .

Therefore, 0.53×108molweighs

0.53×108mol0.227kgmol=1.2×107kg

Hence the weight of the TNT explosive is 1.2×107kg.

04

Step 3(b): Determination of carry that weight in a backpack, or is a truck or train

The mass of the TNT would be 12 million kilograms which would require a truck or train to carry.

05

Step 4(c): Determine mass required for fission bomb.

The fission bomb converts 0.080% of mass into energy of1.8×1014J . The mass-energy relation can be used to determine mass required.

mo=Erel0.0008c2=1.8×1014J0.00083×1082=2.5kg

Hence the 2.5 kg of fission material is required to release 1.8×1014J. This weight can be easily carried in a backpack.

06

Step 5(d): Determination of carry that weight in a backpack, or is a truck or train

The 2.5 kg of fission material is required to release1.8×1014J. This weight can be easily carried in a backpack

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