Help! I do not know how to solve these three problems.I am stuck How do you work

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Help! I do not know how to solve these three problems.I am stuck How do you work these out? Thank you :)

1. Identify the kinds of intermolecular forces in the following substances: A) HCl, B) CH3CH3 C) CH3NH2 D) Kr

2.The vapor pressure of ethanol is at 34.7 degrees Celsius is 100 mm Hg, and the heat of vaporization of ethanol is 38.6 kJ/mol. What is the vapor pressure of ethanol in mm Hg at 65.0 degrees celsius?

3.Pentane (C5H12) and 1-butanol (C4H9OH) are organic liquids with similar molecular masses but sustantially different solubility behavior. Which of the two would you expect to be more soluble in water?Explain.

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Help! I do not know how to solve these three problems.I am stuck How do you work

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