Chemistry, 01.12.2019 22:31 victoria1831
Question 1
which of these quantities determines the amount of heat released when freezing a given amount of a substance?
specific heat capacity
thermal energy
latent heat of fusion
latent heat of vaporization
question 2
the enthalpy of freezing for water is −6.02 kj/mol. what does this indicate?
no heat transfer occurs.
heat is absorbed.
heat is released.
the process is endothermic.
question 3
what does a positive value for enthalpy of vaporization indicate?
the process is endothermic.
the process is exothermic.
no heat transfer occurs.
heat is released by the liquid.
Answers: 2
Chemistry, 22.06.2019 17:40
How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?
Answers: 3
Chemistry, 23.06.2019 00:20
4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound
Answers: 3
Chemistry, 23.06.2019 14:30
Will give imagine you are given a mystery element. it is, however, a discovered and known element. you may perform a maximum of two observations or tests to determine its identity. time and money is critical, so you need to prioritize your tests. if you can get by with a single test, you get 100 super-geek points from your research lab team. pick your two tests, number them as #1 and #2, and justify why you think these two will certainly be enough (and why the first might well be enough all by itself.) the available tests are classification into metal, non-metal, or metalloid, count of valence electrons, count of electron shells, atomic radius (error range: +/- 1 pm), electronegativity (error range: +/- 0.1), first ionization energy (error range: +/- 10 kj/mole), melting point (error range: +/- 10 c), and boiling point (error range: +/- 20 c).
Answers: 2
Question 1
which of these quantities determines the amount of heat released when freezin...
which of these quantities determines the amount of heat released when freezin...
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