Fourteen grams of nitrogen, N2, (N, atomic mass 14 amu) contains ________.
A) 1 mole of nitrogen atoms
B) 0.5 moles of nitrogen atoms
C) 0.25 moles of nitrogen atoms
D) Not enough information is given
Question 2
Why is the surface area of a gecko's foot so extensive?
A) A gecko, like all amphibians, needs extensive surface area under foot for stability on land as well as mobility in water.
B) A gecko's foot acts like a large dipole and thus allows for ion-dipole interaction in water.
C) The greater the surface area the greater the number of induced dipole-induced dipole forces of attraction that can occur between the gecko's foot and the surface.
D) The extensive surface area, once charged by the gecko's body, allows for the dipole-dipole attraction of every contact surface.
The nitrogen cycle. The five main parts of the nitrogen cycle are:
Prostate cancer. In this example, a large mass has grown into the urinary bladder. Prostate cancer i
Notice the reddish-brown haze caused by nitrogen oxides that is often over many major cities.
Structure of phosphate ion and hybrid atomic orbitals of phosphate ion
Mass spectrometry (MS) for Mass, Sequence, and Amino Acid Analyses of Purified Proteins
Mass spectrometry of a synthetic version of collagen peptide