The supercontinent that existed about 200 million years ago was named

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)

Are oil and water a mixture or solution