In the reaction MgCl2 + 2KOH Mg (OH) 2 + 2KCl, if 3 moles MgCl2 are added to 4 moles KOH, what determines how much Mg (OH) 2 is made?

A. The amount of MgCl2 + KOH

B. The amount of KCl

C. The amount of MgCl2

D. The amount of KOH

Which of these is an example of a hydrosphere-cryosphere interaction? A. precipitation falling on rocks B. water vapor escaping into space C. water transporting seeds down river D. water currents melting the glaciers in Antarctica

When mixed, solutions of silver nitrate, AgNO3, and sodium sulfate, Na2SO4, form a precipitate of silver sulfate, Ag2SO4.

4. Write a chemical formula for a compound that has two atoms of oxygen (0) and three atoms of iron (Fe).

DDT is made from the __ of unsaturated hydrocarbons

Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. Suppose 7.22 g of ethane is mixed with 15. g of oxygen. Calculate the minimum mass of ethane that could be left over by the chemical reaction.

How long will it take for the concentration of xy to decrease to 12.5% of its initial concentration when the initial concentration is 0.100?

Which has a higher energy level 6d or 5s?

How far is the Earth for the moon?

It is thought that organelles of eukaryotic organisms, such as mitochondria and chloroplasts (in plant cells) came from

How does temperature affect molecules