27.3 g is the mass of an aluminum sample with a volume of 10.0 cm3.
volume = mass / volume volume = 100 / 20 volume = 5
You need to specify the units of mass and volume.
The percentages refer to the amount of a substance of interest that is contained in a compound or mixture of that and other substances. Percentage by mass = 100*mass of substance of interest/total mass. Percentage by volume = 100*volume of substance of interest/volume mass. And, incidentally, the word is definition, not diffinition.
density = mass divided by volume = 100/25 = 4 grammes per cubic centimetre.
It's the mass divided by its volume. The volume of a rectangular prism is length times width times height. So it would be 100 grams divided by the volume, and that volume = (L*W*H)
The density of aluminum is 2.70 g/cm3. To find the density of 100 cm3 of aluminum with a mass of 250g, divide the mass by the volume: 250g / 100 cm3 = 2.50 g/cm3. The density of the aluminum sample is 2.50 g/cm3.
The density of the aluminum is approximately 0.135 g/cm³. This is calculated by dividing the mass (13.5 g) by the volume (100 cm³) of the aluminum.
% of volume = 100*(volume of substance that you are interested in)/(total volume) % of mass = 100*(mass of substance that you are interested in)/(total mass).
To find the number of atoms of aluminum in a 100 g sample of aluminum sulfide, you first calculate the number of moles of aluminum sulfide. Then, use the molar ratio of aluminum to aluminum sulfide to determine the number of moles of aluminum, and finally convert moles of aluminum to atoms using Avogadro's number (6.022 x 10^23 atoms/mole).
To find the percent by mass of a compound in a given sample, you need to divide the mass of the compound by the total mass of the sample and then multiply by 100. This will give you the percentage of the compound in the sample.
You are dealing with density, so the formula is:D = m/vDensity = Mass ÷ VolumeIn the problem, you are given mass (54 g) and density (2.70 g/cm3); so we solve for v (volume).2.7 = 54 ÷ vv = 20 cm3
The formula for percent by volume (% v/v) is: (Volume of solute / Volume of solution) x 100 The formula for percent by mass (% w/w) is: (Mass of solute / Mass of solution) x 100
volume = mass / volume volume = 100 / 20 volume = 5
You need to specify the units of mass and volume.
To find the percent composition of NaHCO3 in a sample, you would calculate the mass of NaHCO3 in the sample divided by the total mass of the sample, then multiply by 100 to get the percentage.
"centi" is 100. 1 centigram is 100 grams, so Denise's sample is 68,400 centigrams. 68400 - 29510 = 38890 centigrams or 388.90 grams.
Density is calculated by dividing the mass of a substance by its volume. In this case, the density of the unknown liquid is 100 g / 30 ml = 3.33 g/ml.