Write the formula of a reagent which will form a
precipitatewith a solution of cucl2, but not with a solution
ofmgcl2. and write the formula of the precipitate
whichforms.

Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.