Either:
1) Find the radius of each marble and thus their volume through V = 4/3 x pi x r^3 and then add the volumes up.
or
2) Put all the marbles in a measuring jug and fill it up to the top. Pour the water into a separate container and empty the marbles out of the jug. Pour the water back into the jug. Thus:
Volume of water with marbles - volume of water without the marbles = volume of marbles
Density of a substance = (mass of a sample of the substance) divided by (volume of the same sample)
If the marbles are identical, the volume is the same. If you want, you can use different units and it looks like the volume is different.
Find the volume of the sample (Length times width times height) and multipy by the density coefficient.
If you only know mass, you don't have enough information to calculate density.You also need to know the volume of the piece that has that mass.Once you have both of those numbers, the density is(Mass) divided by (Volume)of the same sample.
20% of 50 marbles is 1 fifth of the marbles in the bag. so 50 marbles divided by 5 =10 blue marbles
Volume of a sample = (its mass) divided by (its density)
The core sample is a cylinder. The volume of any cylinder is (pi) x (radius)2 x (length).
Density of a substance = (mass of a sample of the substance) divided by (volume of the same sample)
The density of the sample can be calculated by dividing the mass by the volume. In this case, 55 grams divided by 22 milliliters is approximately 2.5 grams per milliliter.
To calculate the percent of air content in a soil sample, you need to determine the volume of air in the soil and divide it by the total volume of the sample. This can be done by measuring the bulk density of the soil and the particle density, then subtracting the particle density from the bulk density to get the volume of air. Finally, divide the volume of air by the total volume and multiply by 100 to get the percentage.
To find the density of marbles, you would measure the mass of a certain number of marbles using a balance scale, then calculate the volume by either measuring the dimensions and using a formula for the shape of the marbles or by displacement method with water. Finally, divide the mass by the volume to determine the density of the marbles.
density= mass/volume 30g/7500cm3=.004g/cm3
This depends on the nature and form of the sample:- for a solid with a regulate shape weight the sample and calculate the volume from the dimensions; density is the ratio between mass and volume. You can measure the volume of great sample by water displacement.- for other solids use a pycnometer- for liquids use a densimeter (simple or electronic)etc.
To calculate the mass of the sample using dimensional analysis, you would use the expression: mass = volume × density Substitute the given values for volume (10.0 mL) and density (7.87 g/mL) into the expression to calculate the mass of the iron sample.
If the marbles are identical, the volume is the same. If you want, you can use different units and it looks like the volume is different.
To determine the density of graphite, you need to measure the mass and volume of the graphite sample. You can then calculate the density by dividing the mass of the sample by its volume. The density of graphite is around 2.2 g/cm³.
1. Apparent density: - weight a graduated cyllinder - put the sample in the graduated cyllinder up to a given volume (note this volume) - weight the graduated cyllinder with the sample - calculate the mass of the powder by difference - the density is the ratio mass of the sample/volume of the sample 2. True density of a powder: you need a helium pycnometer.