URGENT Use the activity series to determine if the following reaction is possible. If it is possible, write the products and balance the equation. If not, explain. (don't worry about making the numbers subscripts, just put all appropriate numbers in their correct location) 2K(s) + ZnCl2(aq) -

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?