Which of the following molecules has a bent shape? O A. CO2
O B. H20
O C. BeCl2
O D. NH3

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.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

a chemical change results in a new substance being formed; whereas a physical change will result in a different state of matter

explanation: