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Questions in chemistry

[Free] If water and ethanol both have all three intermolecular bonds, why does ethanol evaporate so much quicker?

[Free] How is groundwater formed?

[Free] Explain why ionic compounds are formed when a metal bonds with a nonmetal but covalent compounds are formed when two nonmetals bond.

[Free] How is \(0.00025\) written in scientific notation?

[Free] Why is a piece of apple rotting a chemical change?

[Free] Name five kinds of landforms caused by plate movement.

[Free] If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?

[Free] The combustion of propane may be described by the chemical equation: \[ \text{C}_3\text{H}_8(g) + 5\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(g) \] How many grams of \(\text{O}_2(g)\) are needed to completely burn 40.4 g of \(\text{C}_3\text{H}_8(g)\)?

[Free] How many occupied orbitals does a fluorine atom contain in the ground state?

[Free] Which group of elements is the most unreactive? Why?