Someone me with the application problems:

1) P = 116.75 psi

2) V = 0.565 L.

3) V = 373.33 ml

Explanation:

1) Given, the pressure in tire is 105 psi at 25°C = 298 K

and then it is moved to another place where temperature is -5°C = 268 K.

Now, as the volume of tire remained constant, from gas law,

= constant.

⇒ P₁T₂ = P₂T₁ .

⇒ 105×298 = P ×268.      ⇒ P = 116.75 psi .

2) Given, balloon with volume 0.55 L at 22°C  = 295 K is placed outside where the temperature is 30°C = 303 K and also pressure is constant

⇒From gas laws, = constant

⇒ 0.55 × 303 = V × 295.           ⇒ V = 0.565 L.

3) Given, pressure in balloon changes from 0.80 atm to 1.2 atm

   and initial volume is 560 ml.

   As the temperature remained constant, from gas laws,

    PV = constant.

⇒ 0.80 × 560 = 1.2 × V.              ⇒ V = 373.33 ml.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.