The formula hbr is an example of a(n)
element
covalent compound
metallic compound
ionic compound

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

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!

Which of the following molecules is polar? c3h7oh c2h5cooh