[单选题]
The Maxwell-Boltzmann distribution plot +50obbtmzf( fb kx9qnl-+ tg7ktmj+t1 elow is for the same substance with the same concentration at different temperatures. Which statement is correct about the total number of molecules for each + 7j9qn-1gtlttk xkm+temperature?
A. There are more molecules at low temperatures
B. There are more molecules at high temperatures
C. The number of molecules depends on the temperature
D. The number of molecules remains the same
参考答案: D
本题详细解析: D
The number of molecules remains constant. Temperature only changes the particles’ kinetic energy; when temperature increases, the kinetic energy of the particles also increases.
