An unlabeled, unopened drug bottle was found in the medicine cabinet of Joe’s bathroom. A sample of the drug was analyzed and found to contain 64.953 % C, 4.489% H, 20.358% O and 10.200% S. The molar mass of the compound was found to be the same as the mass of the empirical formula. It may be a drug prescribed for osteoarthritis. Coincidentally, his arthritis has become so intolerable in recent weeks that he’s had to rely on the aid of a crutch for mobility. Prolonged ingestion of this drug is thought to lead to a heart attack. Titan’s doctor, Franklin Finch, has a quiet reputation of prescribing dangerous drugs to “dispose of” unwanted patients. Could Finch’s jealousy by the cause of Joe’s death?

There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

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.

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '