Pls magnesium + hydrochloric acid → magnesium chloride + hydrogen mg + 2hcl → mgcl2 + h2 in this reaction: magnesium (mg) is a hydrogen (h2) is a magnesium chloride (mgcl2) is a hydrochloric acid (hcl) is a

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?