Visible green light has a wavelength around 510 nm. What is its frequency?

A story on chemical reaction or electric current

The intermolecular forces between particles in a solid are select one: a. stronger than those in a liquid. b. too weak to hold the particles in fixed positions. c. weaker than those in a gas. d. of different types than those in a liquid.

Copper crystallizes in a face-centered cubic unit cell. the density of copper is 8.94 g/cm3. calculate the length of the edge of the unit cell in pm.

What reaction would the chemical equation CH4 + 2O2 →2H2O + CO2 represent? combustion of methane replacement of methane formation of methane decomposition of methane

The properties of the hydrogen atom form the basis for all life. True False

Which of these groups of metal would have the most similar properties?. a. Ag, Au, Cu, Zn. b. Cr, Fe, Co, Ni. c. Al, Si, P, S. d. Mg, Ca, Sr, Ba

Organs combine to form ... A cells B tissues C organ systems D organisms

What are real world examples of chemical changes?

Addition of a catalyst can speed up a reaction by providing an alternate reaction pathway that has a

Select the answers below that represent the ionic compounds in this list: na2so4 h2so4 ch3-ch3 n2o4 cacl2 ca3 (po4) 2