Use the following diagram to answer questions 3-6. According to the diagram, which rock layer is probably the
oldest?
O A. Layer A
NA
O B. Layer
C. Layer
D. Layer D
o
US

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction. express your answer as a chemical equation. identify all of the phases in your answer.

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right