The answer is D. (2,2,2,1)
F- is the smallest because it accepts 1 electron 2 make its atomic number 10 making it have jst 2 orbitals but O²-,N³- and Na have their atomic number to be 18,17 and 11 respectively with 3 orbitals..
hope this helps *winks*
<u>Answer:</u> The internal energy change for the reaction is -2850 J
<u>Explanation:</u>
- <u>Sign convention of heat:</u>
When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.
- <u>Sign convention of work:</u>
Work done for expansion process is taken as negative and work done for compression is taken as positive.
According to the First law of thermodynamics,
where,
= internal energy
q = heat absorbed or released = -2290 J
w = work done = -560 J
Putting values in above equation, we get:
Hence, the internal energy change for the reaction is -2850 J
Answer : The number '3' is a moles.
Explanation :
The given chemical formula is,
As we know that,
For 1 mole of , there are 1 mole of nitrogen and 2 moles of oxygen.
For 3 mole of , there are 3 moles of nitrogen and 6 moles of oxygen.
So, from this we conclude that the number '3' present before represent the number of moles.
Hence, the number '3' is a moles.