A sample of sulfur dioxide (SO2) is initially at a temperature of 133 C a volume of 20 L, and a pressure of 850 mm Hg. If the volume changes to 25 L and the temperature increases to 181 C, what is the new pressure?

Show your work. Don't forget to convert C to kelvin

760.39 mmHg (approx.)

Explanation:

Okay so given the first set of information, we have:

T = 406 K (133+273)

V = 20 L

P = 1.1184 atm (converted for continuity reasons from mmHg)

R = 0.08206 L atm/mol K

Using PV = nRT (ideal gas law), we solve for n (moles of SO2).

n = PV/RT = (1.1184 atm * 20 L) / (0.08206 L atm/mol K * 406 K) = 0.6714 mol

Now that you have all the information, you can use the new volume and temperature to solve for pressure.

T = 454 K (181+273)

V = 25 L

n = 0.6714 mol

R = 0.08206 L atm/mol K

Using the ideal gas law again, we solve for P (pressure in atm).

P = nRT/V = (0.6714 mol * 0.08206 L atm/mol K * 454 K) / (25 L) = 1.0005 atm

Then we convert atm back to mmHg to get 760.39 mmHg.

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.