Consider these two electron configurations for neutral atoms l and m. l - 1s22s22p63s2 m - 1s22s22p63s13p1 what is the difference between atom l and atom m? one of the 2p electrons in l has jumped to an excited state one of the 3p electrons in l has jumped down to a lower energy state one of the 3s electrons in m has jumped to an excited state one of the 3p electrons in m has jumped down to a lower energy state

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

the answer is option a.