The Statue of Liberty
is made of copper
that has reacted with
the elements
oxygen...
Chemistry, 05.11.2020 01:00 necolewiggins1043
The Statue of Liberty
is made of copper
that has reacted with
the elements
oxygen, water and
carbon dioxide.
What is the evidence
a chemical reaction
has taken place?
Answers: 3
Chemistry, 22.06.2019 10:00
3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?
Answers: 2
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
Chemistry, 23.06.2019 02:50
What is the typical rotational frequency frot for a molecule like n2 at room temperature (25āc)? assume that d for this molecule is 1Ć„=10ā10m. take the total mass of an n2 molecule to be mn2=4.65Ć10ā26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.
Answers: 3
Chemistry, 23.06.2019 13:30
Determine the osmotic pressure at 25 Ā°c of an aqueous solution that is 0.028 m nano3. a) 0.685 atm b) 0.0729 atm c) 1.37 atm d) 0.0364 atm e) 2.06 atm
Answers: 2
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