Chemistry, 29.04.2021 19:40 mommer2019
Solubility (g salt/100 g H20)
Solubility vs. Temperature for a variety of salts
90
80
70
60
50
40
30
20
10
- NaCl
- Na2HASO4
+ Ba(NO3)2
Na2SO4
Ce2(SO4)3.9H20
0
30
40
50
60
70
80
90
100
10 20
Temperature (°C)
How many grams of NaCl will be needed to form 600 mL of a saturated solution at 100°C?
15 g
24 g
* 40 g
Answers: 1
Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
Chemistry, 22.06.2019 22:30
You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.
Answers: 3
Solubility (g salt/100 g H20)
Solubility vs. Temperature for a variety of salts
90
80<...
90
80<...
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