Explain why the sand on a beach cools down at night more quickly than the ocean water.

How many moles of N2 are essential for generating 0.08 moles of Li3N in the given reaction?6Li N2 2Li3N

Which of the following does NOT indicate that a chemical change may have taken place? a. fracture formation c. precipitate formation b. gas production d. energy transfer

Are molecules with the same ration of atoms but different arrangements isotopes structural isomers steroisomers radioactive isotopesof atoms

What is the usual oxidation number of oxygen in a compound? Question 5 options: + 1 + 2 - 1 - 2

Plants and animals are extremely complex structures. True or False?

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