Question 15(Multiple Choice Worth 4 points)(01.03 MC)The properties of a rectangular prism are listed below:Mass = 120 gLength = 3 cmWidth = 2 cmHeight = 1 cmWhat is the density of the rectangular prism?10 g/cm320 g/cm3360 g/cm3720 g/cm3

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

a- all cells come from pre-existing cells

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.