2. the equilibrium constant kp for the reaction pcl5(g) ⇌ pcl3(g) + cl2(g) is 1.05 atm at 250ºc. the reaction starts with a mixture of pcl5, pcl3, and cl2 at pressures 0.177 atm, 0.223 atm, and 0.111 atm, respectively, at 250ºc. when the mixture comes to equilibrium at that temperature, which pressures will have decreased and which will have increased? explain why. (5 points)

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

b.

explanation:

c) up is the direction the magnetic force is acting on the charge.