The characteristics odour of pineapple is due to ethylbutyrate, a compound containing carbon, hydrogen and oxygen. Combustion of 2.78mg of ethylbutyrate leads to formation of 6.32mg of CO2 and 2.58mg of H2O. (1) what is the empirical formula of the ethylbutyrate. (2) The mass spectrometric analysis of the compound suggests that the molecules mass should be between 100 and 120, what is the likely molecular formula of the compound?

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.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements