Answer to Question #62259 in General Chemistry for salynda

Question

A single electron has a charge of 4.0×10−15 Z . Using zeets and a fictitious unit of mass called the wiggle, w, the charge-to-mass ratio of an electron is 7.0×106 Z/w . What is the mass of an electron in wiggles?

Answer 1

1. First you dissolve the sample with silver in nitric acid 1.0m.
2. Next, using 0.1M sodium hydroxide solution adjusted to pH 7 neutral medium.
3. Next, add on sodium bromide, or sodium. The resulting yellow precipitate, silver bromide!

NaBr + AgNO3 = AgBr + NaNO3

4. The precipitate can be weighed and identified quantitative silver content