Which of these rocks forms from lava that cools very quickly?
A)schist
B)gneiss
C)granite
D)obsidian

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution

How do you interpret a chromagram for what mixtures contain?