this is valid for water only (or any fluid with same density as water) water density (@0°C) = 1000 kg/m^3 (actual value is 999.8395 kg/m^3) = 1 g/ml volume = mass / density = (20 g) / (1 g/ml) = 20 ml
The definition of density is mass/volume. You have a volume (I assume) of 20cm^3, or 20 cubic centimeters, and a mass of 40 grams. You answer would therefore be 2 grams/cubic centimeter, which you can convert into your favorite units as you please. SI units would be kg/cm^3.
This is not a valid conversion; milligrams (mg) and grams (g) are measures of weight or mass while milliliters (mL or ml) measure volume.
3 grams.
Lead has a density of 11.34 g/cc so 20 ml would have a mass of 226.8 g (1 ml = 1 cc) (1 cc means 1 cubic centimeter)
We need to calculate the volume of a metal from the density to be sure. Density of pure gold = 19.3  g·cm-3Density of pure lead = 11.34  g·cm-3The volume of 20 g of gold = mass/density = 20 [g] / 19.3  g·cm-3 = 1.036 cm3 The volume of 10 g of lead = mass/density = 10 [g] / 11.34  g·cm-3 = 0.882 cm3 Hence, the volume of 20 g of gold is slightly greater than that of 10 g of lead. =========================
To determine the density of a substance, you need to divide the mass by the volume. In this case, the density would be 40 grams / 20mL = 2 grams per milliliter (g/mL). Density is a physical property that describes the amount of mass per unit volume of a substance.
Only if you have pure water in mind: 20 milliliters of pure water weigh 20 grams.
Density is found by dividing Mass by volume where mass is in grams and volume is in milliliters. 20 liters=20,000 ml so the calculation becomes 158/20,000 which yiels a result of .0079
density = mass / volume = 52 / 20 = 2.5 g cm-3 Note the units used. Density is commonly measured in grams per cubic centimeter. However using millilitres does not affect the answer since 1 ml = 1 cm3
Density = Mass / Volume So, density of an object with a volume of 10ml and a mass of 20 grams is = m / v = 20grams/10ml = 2g/ml
How many tablespoons of butter are in 200 grams?
Density = (mass) / (volume) = 20/4 = 5 grams per cc
The density of the rock is 20 grams/cm3. You can calculate density by dividing the mass by the volume.
The idea is to divide the mass by the volume.
Impossible to answer. A volume is not measured in grams it is a cubic amount
25 grams is denser than 20 grams because density is a measure of how much mass is contained in a given volume. Since both masses occupy the same volume, the one with more mass (25 grams) will have a higher density.
It is: 20/5 = 4 grams per cm3