Chemistry, 11.12.2019 06:31 eshaesmot12345
Estimate the calorie content of 65 g of candy from the following measurements. a 15-g sample of the candy is placed in a small aluminum container of mass 0.325 kg filled with oxygen. this container is placed in 1.75 kg of water in an aluminum calorimeter cup of mass 0.624 kg at an initial temperature of 15.0°c. the oxygen–candy mixture in the small container (a "bomb calorimeter") is ignited, and the final temperature of the whole system is 53.5°c.
Answers: 1
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Chemistry, 22.06.2019 00:00
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
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Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?
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Estimate the calorie content of 65 g of candy from the following measurements. a 15-g sample of the...
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