01:44:44
If a gas is moved from a large container to a small container but its temperature and number of moles remain the same, what
would happen to the pressure of the gas?
O
It would increase.
It would be halved.
It would stay the same
It would slightly decrease
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The pressure of the gas would increase.

Explanation:

Using the ideal gas formulae we can evaluate this fact;

P₁V₁/T₁ = P₂V₂/T₂

We can assume that the volume is reduced by half (the T₁ and T₂ will cancel out because they remain constant);

P₁V₁ = P₂ * 0.5V₁

P₁V₁/0.5V₁ = P₂

P₁/0.5 = P₂

You can observe that the pressure will also increase – diving a number by a fraction or decimal number increases the resultant value. In this case, the pressure will increase by 2 fold

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-