Properties Chemical formula Naci mass 58.44 g/mo crystals 165 g/cm 1 \"C(1,474 \
ID: 289981 • Letter: P
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Properties Chemical formula Naci mass 58.44 g/mo crystals 165 g/cm 1 "C(1,474 "F: 1,074 K point point 1,413 "C (2,575 "F: 1,686 K 29. The above are some physical properties of NaCl (salt), What phase of matter is NaCl at 8259 c a. Solid b. Liquid c. gas d. plasma Properties Chemical formula C2HgO Molar mass 46.07 g mor s liquid - 7893 , (a120" Melting point 114.14 0.03 c (-173.45 0.05 "F: 159.01:0.03 K) 7824 ± 0 09a-c (172.83:0.16 "F 351.39 ± 0.09 K) Boiling point 30. The above are the physical properties of ethanol (C Hs0). At what phase of matter is CaH&O; at a. b. Liquid c. gas d. plasma a. Yes, because NaCI density is greater than density of CaH 0 b. No, because NaCI density is greater than density of C HO 31, At 20°C, will NaCl float in C2H6O? c. d. No, because both are gases at 20°C No, because both are solids at 20° CExplanation / Answer
29. The melting point of NaCl (commonly known as salt that we use in cooking) is 801oC, which means that above this temperature it would be in liquid phase and hence at 8250C it would be in liquid phase.
30. In this question the temperature is not visible and hence we can have various conditions as follows:
If the temperature in question is below -114.140C it would be in solid phase, after -114.140C it would be in liquid phase till 78.240C, over 78.240C it would be in gas phase.
31. The answer would be b i.e. NaCl won’t float in ethanol because its density is greater than ethanol at 200C.
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