4 NH3(g) + 5 O2(g) = 4 NO(g) + 6 H2O is what type of reaction

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.

po-215 i got it right on the quiz

fe 55.85 g/mol and h2o 18.02 g/mol.