Beyonce measured out 5.25 grams of salt (NaCl). Using dimensional analysis, how many salt moles did she measure out?

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)

Compare and contrast physical changes with chemical changes.

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.