Draw metallic bonding if two copper

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

Scientist think that animals with remarkably similar embryo development probably shared a common ancestor