1. Explain how and when a pure substance can absorb heat energy and not change in temperature? What is really happening?
2. Draw a Lewis structure for CH3OH and formaldehyde (H2CO). Use your knowledge of phases and intermolecular forces to predict which liquid would have a higher vapor pressure , boiling point, surface tension, viscosity, and solubility in water.
3. Why does it take longer to cook an egg in boiling water in Mexico City than in NYC?
4. How does surfactant reduce the surface tension of water and how is it effective in removing stains in clothing?
5. Branched hydrocarbons have lower melting points than straight chain hydrocarbons and tend to be more volatile. Branched carbons also help fuel, burn hotter. Explain the chemistry behind this.
1. Explain how and when a pure substance can absorb heat energy and not change in temperature? What is really happening?
2. Draw a Lewis structure for CH3OH and formaldehyde (H2CO). Use your knowledge of phases and intermolecular forces to predict which liquid would have a higher vapor pressure , boiling point, surface tension, viscosity, and solubility in water.
3. Why does it take longer to cook an egg in boiling water in Mexico City than in NYC?
4. How does surfactant reduce the surface tension of water and how is it effective in removing stains in clothing?
5. Branched hydrocarbons have lower melting points than straight chain hydrocarbons and tend to be more volatile. Branched carbons also help fuel, burn hotter. Explain the chemistry behind this.
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