A thank contain 4liters of Oxygen. The gas temperature is 20oC and the measured pressure is 20 x 105 N/m2. Determine the mass of Oxygen. Given; Patm = 1x105, O = 16, 1dm3 = 1L, R = 8.314 N/mol/K)

a chemical reaction

explanation:

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

it's c (engineer's do their work with mechanical stuff not on any living being)