If you calculated the charge-to-mass ratio for an electron to be 1.81 × 1011, and the accepted value is 1.76 × 1011, what is your percent error?

Which item is the detector in the Thomson Cathode Ray Experiment?  

Suppose you found that the total charge (Qtot) on an oil droplet was 11.42 C. If the accepted charge on an electron (e) is 1.602 × 10-19 C, how many electrons are on the droplet?

Use the table below to identify a strategy to separate a solution with Ag+(aq), Cu2+(aq) and Hg22+(aq). NH3(aq) Na2S(aq) NaCl(aq) Na2SO4(aq) NaOH(aq) Na2CO3(aq) Ag+(aq) Precipitate Precipitate Precipitate Precipitate Cu2+(aq) Precipitate Precipitate Precipitate Hg22+(aq) Precipitate Precipitate Precipitate Precipitate Precipitate Precipitate   In the procedures, when you centrifuge, you concentrate any precipitate at the bottom of the test tube. In the procedures, when you decant, you pour off the liquid into a separate test tube and leave behind the solid precipitate.

During a phase change like melting ice, the temperature of the ice-water mixture

Potential energy resulting from the attraction of particles

When a liquid sample is taken from sea level to a higher elevation, what happens to the external (atmospheric) pressure on the liquid and the boiling point of the liquid?

Which one of the following changes would cause the pressure of a gas to double assuming volume and number of moles is held constant? 

Which of the following is not a standard condition (STP) for gas measurements?

In which of the following processes does the energy of the water decrease?