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It is a term used to denote the part, or fraction, of something that actually has mass, or the amount of a specific element within a compound.

For example, think of a jar full of marbles. There is some space in between the marbles that is empty, yes it contains air but for the purpose of this example consider it to be empty space. If the total volume of the jar the marbles occupy is 95%, then you could say that the mass fraction in the jar is 95% of the total volume.

You could also think of this in another way. Compounds are made up of various elements. Say you have common bleach, sodium hypochlorite, NaOCl, and you want to know what % of bleach is actually chlorine. The total weight of a molecule of NaOCl is 74 g/mol. Since Cl weighs 35g/mol the mass fraction of chlorine in NaOCl is 35/74 *100% or 47.29%.

Q: What is mass fraction?

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mass fraction of Substance A = (mass of Sub. A) / (total mass)

Multiply the mass fraction by 100.

Mass of a substance to its volume

1/1836

It is 720/1000. The fraction can be simplified but then loses its context in terms of the units of mass.

Related questions

mass fraction of Substance A = (mass of Sub. A) / (total mass)

Multiply the mass fraction by 100.

To calculate the mass percent of benzene in the solution, we first need to convert the mole fraction of benzene to mass fraction using the molecular weights of benzene and toluene. Then, we can use the formula: Mass percent = (mass fraction of benzene / total mass of solution) x 100 Given the mole fraction of benzene as 0.40, we can use this information to determine the mass fraction and then calculate the mass percent of benzene in the solution.

volume = mass/density and density = mass/volume

Ozone layer contains a fraction of mass. It is made up of ozone gas.

Percentage composition= (mass of the element/mass of the molecule)*100 The fraction of the molecule's mass that comes from the element's mass

it is the ratio of mass of saturated vapour to the total mass of liquid

Mass of a substance to its volume

1/1836

There can be no answer. 200 grams can be expressed as a fraction only in the context of another quantity of mass.

It is 720/1000. The fraction can be simplified but then loses its context in terms of the units of mass.

Mars would have to find more mass if it wanted to equal the Earth's. It has only 11% of Earth's mass.