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Which of the following statements about electrons is not true?

You have a sample rock bearing the unstable isotope potassium-40 (40K) which decays into the stable isotope argon-40 (40Ar) over the course of a 1.3-billion year half life. In your sample you analyze the two isotopes and find that you have 8 g of 40K. The 40Ar analysis indicates that the sample originally started with 32 g of 40K. What is the age of this sample in years?

Energy Level Transitions. The diagram below shows five transitions (labeled with capital letters A through E) representing an electron moving between energy levels in a hydrogen atom. electron jumps.jpg  Which transition could represent an atom that absorbs a photon with 10.2 eV of energy?   

Match each world with the best description of its atmosphere.  Some answers will be used more than once.

Which of the following is not a way light and matter interact?

You may use and calculator and scratch paper.  The exam must be completed in one sitting.

Assume that the graphs show a competitive market for the product stated in the question.     Select the graph above that best shows the change in the market for chicken when the price of a substitute, such as beef, decreases.

Without specialization countries would have _______ goods. 

A nurse is teaching a group of nursing students about memantine (Namenda) prescribed for a client with Alzheimer’s disease. Which statement by a student indicates a correct understanding of the medication?

A 12-month-old child has been seen in a clinic for a second middle ear infection since age 8 months. The nurse receives a call from the parent after the third day of giving amoxicillin (Amoxil). The child continues to have a temperature of 103.1 and is unable to sleep well because of pain. What will the nurse do?