Acylinder with a movable piston records a volume of 12.6l when 3.0 mol of oxygen is added. the gas in the cylinder has a pressure of 5.83 atm. the cylinder develops a leak and the volume of gas is now recorded to be 12.1 l at the same pressure. how many moles of oxygen are lost?

Answer : The moles of oxygen gas lost are 2.88 mole

Explanation :

According to the Avogadro's Law, the volume is directly proportional to the number of moles of the gas at constant pressure and temperature.

  (At constant temperature and pressure)

or,

where,

= initial volume of oxygen gas = 12.6 L

= final volume of oxygen gas = 12.1 L

= initial moles of oxygen gas = 3.0 mole

= final moles of oxygen gas = ?

Now put all the given values in the above formula, we get the final moles of oxygen gas.

Therefore, the moles of oxygen gas lost are 2.88 mole

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ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.