What is the outermost layer of the earth's core called?

Is crushing a rock a chemical or physical change?

List four greenhouse gases in the atmosphere. For each gas, describe its prevalence in the atmosphere, its natural sources, its human-induced sources, and how its concentration in the atmosphere might be changing.

The 3 types of heat transfer are convection, radiation, connected. A. True B. False

What is a dark mysterious and non-nicotine mineral containing sample of a very common silicate? It's geology actually.

Which term best describes an electrical circuit? Select one: a. steady flow b. quick burst c. short-lived phenomenom d. dangerous explosion

Given the reaction 2NaOH + H2SO4 = Na2SO4 + 2H2O, what is the total number of grams of NaOH needed to react completely with 196 grams of H2SO4

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom

How is the ocean important to human survival? restate the question