Which best describes the particles in a gas when the temperature rises from 23 °c to 46 °c?

a. the average energy doubles.

b. the average energy increases.

c. the average velocity of the particles increases by a factor of sqrt 2 .

d. the average energy remains constant but the velocity of some particles increases

trigonal pyramidal

tetrahedral

trigonal planar

bent

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.