PLEASE HELP ASAP The molar mass of two equally sized samples of unknown gaseous compounds is shown below.

Molar Mass Comparison
Gas Molar Mass
X 28 g/mol
Y 44 g/mol

At STP, which describes the density and effusion of both gases?
A. Gas X has a higher density and effuses faster than Gas Y.
B. Gas X has a higher density and effuses slower than Gas Y.
C. Gas X has a lower density and effuses slower than Gas Y.
D. Gas X has a lower density and effuses faster than Gas Y.

your picture is not part of the scientific method.

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.