Author Question: A neutral atom has electron configuration 1s22s22p63s23p2. What element is this? A) carbon ... (Read 148 times)

TFauchery · **on:** Jul 29, 2018

A neutral atom has electron configuration 1s22s22p63s23p2. What element is this?

A)

carbon
B)

iron
C)

nitrogen
D)

silicon
E)

germanium

Question 2

Which of the following is an example of a reversible process?

A)

An ice cube at 0C melts while in a water bath at 0C.
B)

A hand pump is rapidly compressed and the pressure and temperature in the pump rise. The pump is held in position as the temperature drops to the ambient temperature.
C)

A stick of dynamite explodes.
D)

A high pressure air tank at room temperature has its valve opened and the gas in the tank rushes out until the pressure in the tank is equal to atmospheric pressure.
E)

A car engine burns fuel to produce motion of the car and exhausts the 140C waste products of the combustion into the 20C atmosphere.