What is the Density? Mass=121 grams. Volume=11mL.

You do not say what units you want.

as your wrote it you have rho = 121/11 = 11 g/mL
HOWEVER
physicists use Kilograms / cubic meter
0.121 kg / 11*10^-6 m^3 = 0.011 *10^6 = 11,000 kg/m^3

Break it down for me.

Density is a measure of how much mass is contained within a certain volume of an object or substance. It is typically expressed in units of grams per milliliter (g/mL) or grams per cubic centimeter (g/cm³).

To calculate density, you need to divide the mass of the object by its volume. In this case, the given mass is 121 grams and the volume is 11 mL.

The formula for density is:

Density = Mass / Volume

So, to find the density in this case, you divide the mass of 121 grams by the volume of 11 mL:

Density = 121 grams / 11 mL

However, before proceeding, it is important to note that mass and volume need to be in compatible units for accurate calculations. In this case, the mass is given in grams, which is already a suitable unit for density calculations. However, the volume is given in milliliters (mL), which needs to be converted to a cubic unit such as cubic centimeters (cm³) to match the unit for density.

To convert milliliters to cubic centimeters, you can use the fact that 1 mL is equal to 1 cm³. Therefore, the volume of 11 mL can be directly written as 11 cm³.

Now, we can calculate the density:

Density = 121 grams / 11 cm³

Calculating this division gives you the density of the object in grams per cubic centimeter (g/cm³).