Does salt (nacl) dissolve in ethanol, acetone or hexane? why or why not?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Which compound contain an iron with a 3+ charge

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.