The question cannot be answered.
Density is a measure of mas per unit volume, or the ratio of mass and volume. 13 millimetres is a measure of distance or length: there is no information in the question about the volume.
Density=Mass/Volume You need also to know the volume !
density = mass/volume density = 5/10 = 0.5 grams per cubic centimeter
Density = mass/volume, so:36 grams/ 12 milliliters3 grams/ milliliter
Density = Mass/Volume = 30/15 = 2 grams per millilitre.
Density = Mass/Volume = 150g/50mL = 3 grams per millilitre.
0.20293g/cm3
462.87gramms
I do know about the density of water. The density of water is 1.0 grams/ millimeter. To find the density of an object, divide its mass by volume. If you have any further questions, ask me.
Density=Mass/Volume You need also to know the volume !
Boron has a density of 2.34 grams per cubic centimeter. A link is provided. It also has a mass of 10.811 grams.
The density is simply 10 grams per litre. The bit about "a mass of 50 grams" is irrelevant to the calculation of density.
Density = Mass/Volume so Volume = Mass/Density. Having said that, density is not measured in grams so it cannot be 0.789 grams. As a result, the question cannot be answered.
the mass is the 50 grams you probably need the volume volume = mass / density get the density from tables
Density = Mass/Volume Density = 112g/7.40cm3 = 15.1 grams per centimeter cubed
density = mass/volume density = 5/10 = 0.5 grams per cubic centimeter
Density = mass/volume, so:36 grams/ 12 milliliters3 grams/ milliliter
Density = Mass/Volume. You cannot calculate density without knowing BOTH mass and volume.