Descibe the probable causes of two mass extinctions.

Describe what happens to the potential energy and the kinetic energy of a ball, as it rolls down a hill, from a position of rest at the top of a hill.

The mitochondria is an example of an organelle. What is it's function?

Where is the atmosephere the most dence

Who is narrating the story Charles by Shirley Jackson

What is the name of a compound that has the formula C6H6

Name the following compound HClO

Aluminum and Oxygen gas will react to form Aluminum Oxide (Al2O3). When the equation is balanced, How many moles of Al2O3 are formed when a mixture of 0.36 moles Al is ignited? a. 0.12 b. 0.18 c. 0.28 d. 0.46

Which state of the West produces the widest varieties of fruits, vegetables, and nuts? A) California B) Colorado C) Wyoming D) Alaska

A chemical engineer for a fertilizer company is determining the most efficient way to produce ammonia. the engineer carries out the haber reaction under four different conditions.

What type of Bond exist in a molecule of hydrogen Iodide