If you're question is referring to finding a percentage once you already have the mass, then all you do is multiply the mass by the percent. Since percent is always out of 100, you divide your percent by 100 to get a decimal form (for example 92% becomes .92). Since calculators don't usually allow for a percentage sign, you take your new-found decimal and multiply it by your mass. I hope this helps
Percent by mass = (100) times (mass of the ingredient of interest) divided by (mass of the whole mixture)
Percent of an objects mass is expressed in terms of its weight. Percent of an objects volume is expressed in terms of its size.
Multiply the mass fraction by 100.
To find percent composition, you must work with the atomic masses. Look on a periodic chart to find the atomic masses of F and Na. You will find that Na has an atomic mass of 22.990 grams per mole of Na and that F has an atomic mass of 18.998 grams per mole of F. So, add these both together, and that will tell you how much mass NaF will be. NaF will have a mass of 41.988 grams per mole of NaF. Now to take the percent composition of F in NaF, simply divide the mass of F by the mass of NaF. That will give you [18.998/41.988]=.452 which will be about 45%. So your answer is that F has a 45% composition of NaF. PS: Since Na and F only had a stoichiometry of 1 (meaning there is 1 Na and 1 F in the molecule), no multiplication of the atomic masses was necessary when calculating the total mass of the molecule.
What do you use to find mass
To find the percent composition of oxygen in Na2O, find the total molar mass of the compound. Then, divide the molar mass of oxygen by the molar mass of the compound, and multiply by 100% to get the percent oxygen.
times it together
The percent composition of a compound tells the amount of each element in the compound as a percentage. It is possible to find if the mass of an element and the total mass of the compound is known.
They are synonyms.
15-17 percent of the mass of the Sun.15-17 percent of the mass of the Sun.15-17 percent of the mass of the Sun.15-17 percent of the mass of the Sun.
In Al2Cl(OH)5 Mass percent is 31.03% You find it by adding up the total molar mass (found on the periodic table) and then adding up the molar mass of Al you have. Finally you divide the molar mass of Al by the total molar mass.
1. Find the molar mass (MM) of the substances.MM FeSO4 = 151.91g+MM 7H2O = 126.11gMM FeSO4 x 7H2O = 278.02g2. Find the percent water of hydrate.Divide the mass of water by the mass of the hydrate; multiply result by 100%.126.11g278.02g x 100%Percent water of FeSO4 * 7H2O is 45.36%.Finding Molar Mass# atoms Element A x atomic mass Element A = Mass A# atoms Element B x atomic mass Element B = Mass B... etc.Add up all the mass values for the substance and you have the molar mass of the substance.
If you measured your mass and your weight and then went to the moon, you would find that your mass had not changed, and your weight had become about 83 percent less.
Amount of mass of component Y divided by total mass times 100% equals (=) percent (%) Y component.
.00513x=55.85g/mol x=9.19x10^-5 amu
Percent by mass = (100) times (mass of the ingredient of interest) divided by (mass of the whole mixture)
the percent sulfur by mass in so3 is 40.050%