In a preliminary experiment, a solution containing 0.0837 m x and 0.0666 m s gave peak areas of ax = 423 and as = 347. (areas are measured in arbitrary units.) to analyze the unknown, 10.0 ml of 0.146 m s were added to a flask with 10.0 ml of unknown and the mixture was diluted to 25.0 ml in a volumetric flask. this mixture gave ax = 553 and as = 582. find the concentration of x in the unknown.
1) find the value of f determined in the preliminary experiment. report your answer to 3 significant figures.
2) find the value of [s]final. report your answer in m to 3 significant figures.
3)find the value of [x]final. report your answer in m to 3 significant figures.

Note the ph and poh values labeled with letters on the ph scale below. based on log rules and the way ph is calculated, what is the difference in [oh– ] concentration between point a and point b. a) 10^1 b) 10^5 c) 10^6 d) 10^7

The earth's moon is unusually large. two popular theories of the moon's origin include the "sister world" hypothesis, which states that the moon formed from the same materials as the earth, near enough to the earth that they fell into orbit around each other. a second theory is the "capture" hypothesis, in which the moon formed elsewhere in the solar system, and the earth's gravity pulled it into its orbit. studies of what the moon is made of indicate that some of its materials had to come from the earth or from the same area of the solar system where the earth had formed. at the same time, the moon does not contain much of the material that makes up the earth's core, so the moon could not have formed from the same materials as the earth. how do the two facts above affect the described theories of the moon's origin? a. they show that scientists will never agree on where the moon came from. b. they show that more experiments on moon formation need to be done. c. they show that no theory accounts for the existence of the moon. d. they show that neither theory is complete and entirely correct.

Using the periodic table, complete the table to describe each atom. type in your answers