pdf are given a sample that contains a mixture of the following two arsenic-containing minerals: getchellite (AsSbS3) and paakkonenite (Sb2AsS2). You start with a sample of this mixture that has a mass of 53.56 grams. You perform a reaction that converts the arsenic (As) in these minerals into the form iron(III) arsenate (FeAsO4), and 31.03 grams of this product are obtained. What is the percent by mass of getchellite in the original sample

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.

What is the main reason why some developing countries fear the increase the free trade policies around the world?

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?