If you had a object with a density of 1.12 gcm3 would it sink or float in a container of salt water that has a density of 1.35 gmL why?

The object would float in the salt water. This is because the object's density (1.12 g/cm3) is less than the density of the salt water (1.35 g/mL), making it less dense than the surrounding medium and causing it to float.