The wavelength of some violet light is 420.0 nm. What is the frequency of this violet light?

If an atom has 17 electrons and its mass number is 35, calculate the following: - number of protons - number of neutrons - atomic number

Ethanol ia a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 123 mL of ethanol?

To make pickles, fresh cucumbers are soaked in a salt water solution called brine. how many liters of a 4% brine solution must be added to 16 liters of a 10% brine solution to dilute it to an 8% solution?

Determine the molar solubility for al (oh) 3 in pure water. ksp for al (oh) 3 = 1.3 x 10-33.

What are the most common elements in a canyon?

What would happen if you tried to sqeeze a gas into a smaller container?

Paint, paint thinners and some cleaning agents can weaken the shell of a hard hat and may eliminate

A 10 chunk of metal has a specific heat of 0.25 J/g ºC. The temperature is changed from 10ºC to 45ºC. How much heat is required?

In this reaction what is the correct coefficient for sodium chloride? pb (no3) 2? nacl → pbcl2? nano3

Classify each of the following as a path function or a state function. work energy distance traveled enthalpy heat