A12-liter [l] flask contains 1.3 moles [mol] of an ideal gas at a temperature of 20 degrees celsius [degreesc]. what is the pressure in the flask in units of atmospheres [atm]

Given: Volume of flask=12 L

Number of moles of an ideal gas=1.3 mol

Temperature=20°C

Gas is an ideal gas thus, it follows the ideal gas equation as follows:

Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature.

First convert temperature from °C to K as follows:

Thus,

Rearrange ideal gas equation to calculate pressure,

Putting the values,

Therefore, pressure in the flask will be 2.6 atm.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

it is the minimum amount of material needed to sustain a fission reaction.

critical mass is the minimum amount of fissionable material that must be assembled for a sustained fission reaction to take place. although two to three neutrons are produced for every fission, not all of these neutrons are available for continuing the fission reaction. if the conditions are such that the neutrons are lost at a faster rate than they are formed by fission, the chain reaction will not be self-sustaining.   at the point where the chain reaction can become self-sustaining, this is referred to as critical mass.