What are the units of k in the following rate law? rate = k[x][y]m/s1/mss/m^2m/sm^2/s

k = 1/Ms

Explanation:

Since the rate has to have a value of M/s we can compute the units of k  for

rate = k[X][Y]

M/s = k M x M  ⇒ M/s = k M²   therefore k = 1/Ms  to make the units consistent.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

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.