How many grams of octane must be burned to release 357.0 kcal?

Why is it difficult for an organism living in the rainforest to become a fossil?

For a reaction system at equlibrium, le chateliers principle can be used to predict the

An aqueous solution is prepared by dissolving the salt formed by the neutralization of a weak acid by a weak base. Which statement about the solution is correct? a. the solution is strongly basicb. the solution is weakly basicc.

O, li, c which electrons experience the greatest effective nuclear charge? express your answer as a chemical formula.

Describe the formation of a hydrogen bond and explain how it differs from a covalent or ionic bond

Why doesn't gravity pull water all the way to the center of the Earth?

What is centrifugation? Which substance is separated by this method?

All of the elements in a family or group have similar chemical properties. which of the following statements best explains why this is true? a. the elements in a group have the same number of protons in their nuclei. b.

A 124-mL bubble of hot gas initially at 212 °C and 1.80atm is emitted from an active volcano. What is the final temperature, in degrees Celcius, of the gas in the bubble outside the volcano when the final volume of the bubble is 138 mL and the

Describe the difference between a qualitative description and a quantitative description, and include an example of each.