Risk factors that increase the probability of developing gallbladder disease includes:

   A 25-year-old female presenting with right lower quadrant abdominal pain is expected to have appendicitis. She would have positive results on all of these tests with appendicitis, EXCEPT:

   Primary causes of Acute Pancreatitis include all of the following EXCEPT:

And  free point

Anything that has mass and takes up space is known as _____.

The smallest piece of an element that maintains the identity of that element is called a(n) _____.

What is the atomic mass of dinitrogen trioxide (atomic mass of oxygen=15.999 u; atomic mass of nitrogen = 14.007 u)?

Uranium exists as about 98% U-238 and about 2% U-235. What is the atomic mass of uranium?

Which of the following represents acetic acid?

The atomic number of an atom refers to the _____.