Chemistry, 02.12.2021 22:20 bankroll42
Which statement explains why a rubber band analogy is not a perfect comparison for bonds in a substance when considering phase changes? (1 point)
O For a phase change from solid to liquid, the bonds break completely and particles can move independently of each other.
O For a phase change from liquid to gas, the bonds do not break completely and particles can still slide past each other.
O For a phase change from solid to liquid, the bonds do not break completely and particles can still slide past each other.
O For a phase change from liquid to gas, the bonds break completely and particles can move independently of each other.
Answers: 2
Chemistry, 22.06.2019 08:00
An observation that requires measurement is called quantitative observable or qualitative
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Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
Answers: 1
Chemistry, 22.06.2019 18:10
Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
Which statement explains why a rubber band analogy is not a perfect comparison for bonds in a substa...
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