if an object has a mass of 615grams and a volume of 150cm3 is the density 5.86g/cm3

To calculate the density of an object, you need to use the formula:

Density = mass / volume

In this case, the given mass is 615 grams, and the given volume is 150 cm^3.

Plug these values into the formula:

Density = 615 g / 150 cm^3

Using a calculator, divide 615 by 150:

Density = 4.1 g/cm^3

Therefore, the density of the object is 4.1 g/cm^3, not 5.86 g/cm^3 as initially suggested.