Mr. Forester and Mr. Chavarin were cooking burgers at the Senior Picnic (this was pre-pandemic) and the propane grill ran out of fuel. When they went to change tanks they noticed that the "empty" tank was covered in ice, which seemed unusual for a sunny June day in Oceanside. Sure enough, the outside temperature was 25 degrees Celsius, while they tank was at -5. If the empty tank still had 0.75 mol of propane once it reached equilibrium (gauge reading 0 kPa) with the air (the barometer said 101.27 kPa that day) and the initial reading for the pressure gauge on the fuel cylinder was [400 + the last three digits of your ID] kPa, how many moles of propane had they burned so far? I don't know what this is asking me to do so if somebody can help me that'd be great.

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'

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.

your answer is c) plasma

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