How does chromatography relate to gel electrophoresis

A sample of gold has a mass of 30.94 grams and a density of 19.32g/cm^3. What volume of space will this sample of gold occupy? Use the formula D=m/v 0.62cm^3 597.76cm^3 1.60 cm^3 632.10cm^3

How many valence electrons does a neutral atom of aluminum have?

Find the enthalpy change per mole of sodium when sodium reacts with water. 13 grams of sodium reacts with 247 cm3 of water, producing a temperature change from 298 k to 339.7 k. the specific heat capacity of water is 4.18 j/k g.

This common acid is found in the kitchen, the bathroom, and sometimes in the medicine cabinet. What is the name of this acid? A) Acetic acid B) Carbonic acid C) Hypochloric acid D) Hydrochloric acid

Name the compound P4O10

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A) ? A) Hydrogen bonding B) Ionic bonding C) Dipole interactions D) London dispersion forces

Which is the correct equation for refractive index?

Alcl3) and lithium sulfate (li2so4) (note - this is a double replacement reaction. you need this information to predict the products of the reaction)

Which type of bond is present in hydrogen sulfide (H2S) ? The table of electronegativities is given.

What is the oxidation state of S in HSO4^2-?