Which is characteristic of a mineral?
it must be naturally occuring and crystalline
it must be man-made and crystalline
it must be man-made and amorphous
it must be naturally occurring and amorphous

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

Use the gizmo to find the concentration of the mystery ch3cooh. use the titrant and indicator shown below perform the titration. what is the titrant volume? titrant analyte indicator titrant volume analyte concentration naoh ch3cooh phenophthalein select one: a. 20.0 ml b. 27.0 ml c. 30.0 ml d. 24.0 ml

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion