Compare and contrast the reaction between 1) halogens and alkanes and between 2) halogens and alkenes. 1) Occurs ; requires ; by 2) Occurs ; requires ; by

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.

did anyone actually do this? like if anyone has submitted this i rly need .