How many grams of nano3 will precipitate if a saturated solution of nano3 in 200 g of water at 50°c is cooled to 20oc? assume the following solubility values for nano3: 114.0g/100g h2o at 50oc; 88.0g/100g h2o at 20oc

Compare and contrast physical changes with chemical changes.

What is the independent variable in this investigation? mass volume sample number substance density

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?