Chemistry, 05.06.2020 08:59 duplessistoccara
30,0 g of ammonium nitrate (NH. NO) is added to 200 g of water in an insulated polystyrene
cup at 25,0 °C. The final temperature recorded was 12.8 °C.
Use the data given to calculate the standard enthalpy change of solution of NH. NO.
(Assume the heat capacity of all solutions = 4.20 J K cm)
Answers: 3
Chemistry, 22.06.2019 12:00
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
Chemistry, 22.06.2019 12:30
Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?
Answers: 2
30,0 g of ammonium nitrate (NH. NO) is added to 200 g of water in an insulated polystyrene
cup at 2...
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