At what temperature will 5 g of Cl2 exert a pressure of 900 mmHg at a volume of .75 L?

The temperature : 154.73 K

Given

mass = m = 5 g of Cl2

P = 900 mmHg = 1,18421 atm

V = 0.75 L

Required

Temperature

Solution

mol Cl2 = mass : MW = 5 : 71 = 0.07

Ideal gas law : PV = nRT

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.082 L.atm / mol K  

T = temperature, Kelvin  

T = PV/nR

Input the value :

T = 1.18421 x 0.75 / 0.07 x 0.082

T = 154.73 K

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

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.