Find the temperature at which ethanol boils on a day in the mountains when the barometric pressure is 537 mmhg. (the heat of vaporization of ethanol is 39.3 kj/mol; the normal boiling point of ethanol is 78.3 degrees celcius, r=8.314 j/k mol.

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.