Find the mass of a sample of methane (CH₄) if it contains 5.6x10²⁴ molecules of methane. chapter: mole

200. ml of 3.00 m nacl solution is diluted to a final volume of 500. ml. what is the molarity of the final solution?

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Drug abuse will not lead to physical and psychological dependence. true or false ?