Chemistry !
i am not sure how to do this, so if you could explain how you got the answer that’d be great.

write the chemical equation and balance the equation.

the word equation is:
hydrogen peroxide -> oxygen gas + water

The word equation is:  

 This reaction happens when there is the decomposition of hydrogen peroxide into oxygen and water. Thus, the equation would be  

Balancing the equation requires to have the same number of atoms of each element on both the side. To balance this equation we need to add 2 water () molecules  and 2  hydrogen peroxide () molecules  . As we know, oxygen is naturally diatomic. Thus, the balancing equation would be:

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.

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.