400g/500cm = 0.8 g/cm3
I'm going to assume you mean a volume of 500cm3. density = mass/volume = 400g/500cm3 = 0.8g/cm3
You are comparing 2 different things: weight and volume. So this question cannot be answered, unless you tell me what substance you are working with =] First of all, mg is a measure of weight and ml is a measurement of volume, to determine how many ml 400mg is we need to know what density or Specific Gravity (SG) the substance is. Water has a SG of 1 and a density of 1kg per liter.there are 1000mg in 1 gram and a 1000 grams in a kilogram (about 2.2 pounds) so 400mg=0.0004 kilograms.The density of Gold is about 19.3kg per liter ( or 19.3 grams per ml).The formula for density is D=m/v (Densityequals mass over volume) Mass divided by volume.Also see http://wiki.answers.com/Q/What_is_the_formula_for_density
That will depend on the exact shape, and the material it is made of.You can get an estimate, by assuming a spherical shape, calculating the volume, and multiplying that by some density (for example, the density of water). The actual mass may be a bit more than that if its a rocky asteroid; a bit less if it's ice, for instance.
W/o knowing the density, you can't. Milliliter is volume and grams is weight. There's no obvious comparison between the two.
The only way that charcoal (whether of wood, animal, etc.) can float on water is if the total mass of the charcoal is less than the total mass of an equivalent volume of water. This means that the charcoal is not heavier than water, at least not an equal volume of water. If the charcoal was heavier than (an equivalent volume of) water, it would not float.
I'm going to assume you mean a volume of 500cm3. density = mass/volume = 400g/500cm3 = 0.8g/cm3
Density = Mass /Volume = 800g / 2L = 400 g per L
stupid question. mass and volume are not interchangable. it depends on the density of the mass. a 400 gram balloon will take up more milliliters than a 400 gram rock.
300 to 400
You can't do a general conversion from liters to grams. A liter is a unit of volume, a gram is a unit of mass. For a specific substance, the relationship is: mass = volume x density
Mass and Volume are related through Density where: Volume x Density = Mass As for your question, styrofoam is a brand name that we use to describe any polystyrene foam. As such, its density varies depending on the manufacturer. From what I found in this answer: http://wiki.answers.com/Q/What_is_the_density_of_styrofoam it looks like you would have anywhere from 50 to 400 cm3 (50 to 400mL)
The mass of the sample is 400 kg = 400,000 grams.The volume is (20 x 50 x 80) = 80,000 cm3The density is (mass / volume) = (400,000 / 80,000) = 5 gm/cm3
It is not clear whether the strength of the solution is given in terms of mass/mass or volume/volume (or mass/volume). Without that information, it is not possile to answer the question. Depending on which one you may need the density of the active ingredient or of the solvent to convert between mass and volume of that component.
You are comparing 2 different things: weight and volume. So this question cannot be answered, unless you tell me what substance you are working with =] First of all, mg is a measure of weight and ml is a measurement of volume, to determine how many ml 400mg is we need to know what density or Specific Gravity (SG) the substance is. Water has a SG of 1 and a density of 1kg per liter.there are 1000mg in 1 gram and a 1000 grams in a kilogram (about 2.2 pounds) so 400mg=0.0004 kilograms.The density of Gold is about 19.3kg per liter ( or 19.3 grams per ml).The formula for density is D=m/v (Densityequals mass over volume) Mass divided by volume.Also see http://wiki.answers.com/Q/What_is_the_formula_for_density
The units are not directly convertible. Liters (ml) are a liquid volume, and grams are mass/weight units. Knowing the specific density of the sugar would allow calculation of the dry volume.
This cannot be sensibly answered. Milliliters is a measure of volume and the other is a measure of weight or mass.
700 g