Ammonium nitrate can decompose explosively when heated according to the following equation:
2nh4no3(s) → 2n2(g)+4h2o(g)+o2(g)
how many liters of gas would be formed at 505 ∘c and 1.00 atm pressure from an explosion of 445 g of nh4no3?

354.7 liters of gas are been formed.

Explanation:

A typical problem to apply the Ideal Gases Law.

P.V = n.R.T

Pressure : 1 atm

Volume: Unknown

Mol: 445g/molar weight NH4NO3

R = 0.082 L.atm/mol.K

T°K  = 505°C + 273 =778K

445g/80.04 g/m = 5.56 mol

1 atm . V = 5.56mol . 0.082 L.atm/mol.K . 778K

V= (5.56mol . 0.082 L.atm/mol.K . 778K) /1atm

V= 354,7 L

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.