The speed of an electron is 1.68 x108 m/s. What is the wavelength?

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

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!

Write and balance the chemical equation that represents the reaction of aqueous sulfuric acid with aqueous sodium hydroxide to form water and sodium sulfate. include phases.