Calculate the minimum concentration of mg2+ that mustbe added to 0.10 m naf in order to initiate a precipitate ofmagnesium fluoride. (for mgf2, ksp = 6.9 x10-9.)a. 1.4 x 107m
b. 6.9 x 10-9m
c. 6.9x 10-8 md. 1.7 x 10-7m
e. 6.9 x 10-7 m

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !