A0.3423 g sample of pentane, c5h12, was burned in a bomb calorimeter. the temperature of the calorimeter and the 1.000kg of water contained therein rose from 20.22 degrees celcius to 22.82 degrees celcius. the heat capacity of the calorimeter is 2.21 kj/c. the heat capacity of water = 4.184 j/g c. a. how much heat was given off during combustion fo the sample of pentane. answer = 16.6 kjb. what is the heat of combustion, in kilojoules, per gram of pentaneanswer = 48.6 kj/g

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!

Essay-alternative energy sources research sources of energy that are being developed. write a report of 350-400 words discussing the information you learned concerning the development of various energy sources and the impact that you think they will have on your life. include sources cited at the end of your report using the mla format. follow the rubric guidelines. note that wikipedia is not an appropriate resource for a research paper. worth 99