The box below to the left represents ions in a certain volume of 0. 10mhcl(aq). In the box below to the right, draw a representation of ions in the same volume of 0. 20mhcl(aq). (do not include any water molecules in your drawing. ).

If i got an 1040 on my psat, what are the chances of being able to get a 1400 on the sat. and are there any recommended ways to study.

Find an equation in standard form of the parabola that passes through (-2, 9), (-4, 5), and (1, 0)

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.