The tin and zinc contents of a brass sample are analyzed with the following results: (a) Zn: 33.27, 33.37, and 33.34%

(b) Sn: 0.022, 0.025, and 0.026%

Calculate the standard deviation and the coefficient of variation (relative standard

deviation) for the analysis.​

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid