150cc is how many KG?

To convert cubic centimeters (cc) to kilograms (kg), you need to know the density of the substance in question. Density is typically measured in kg per cubic centimeter (kg/cm^3). Once you have the density, you can multiply the volume in cc by the density to get the mass in kg. Without knowing the substance's density, it is not possible to provide a direct conversion from cc to kg.