Hey yall so I have been feeling down lately and I thought maybe if I i see some funny pics i would feel better sooo

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

How do you convert 4 mmol of bromobenzene to ml?

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!