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The molecular weight (or, more appropriately, the molar mass) is defined by # of grams per # of moles.
MW = g / mol
For example: if you have 4 grams of substance and you know the substance to be 2 moles (say, for example, the balanced chemical equation), then your MW would be 2.
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∙ 14y ago
Wiki User
∙ 11y agoThe molecular weight of a substance expressed in grams is 1 mole. As an example, the molecular weight of sulfuric acid is 98. So if you had 98g you would have 1 mole.
Wiki User
∙ 7y agoThe molar mass is the sum of the atomic weigths of atoms contained in the compound.
Wiki User
∙ 7y agoThis is the molar mass or atomic weight expressed in grams.
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Is molar mass is mass in grams of one kilogram of any pure substance?
False
What is the molar mass of a molecule?
The mass of one mole of substance, usually in grams or kilograms
Is the molar mass a fixed quantity for a particular substance?
For most purposes, the molar mass of any particular substance remains the same. However to be precise I will note that there are isotopic variations which can affect molar mass. In other words, it is normally expected that a given substance will have a certain mixture of isotopes giving a certain mass, but a substance obtained from one source might have a different isotope ratio than the same substance obtained from a different source.
What unit do chemists use to measure the amount of substance since they cant ohysically count the pieces in that substance?
They measure the mass, usually in grams or milligrams, but any "type" of gram is possible. For example, the molar mass of a substance is the mass of one mole of that substance in grams. We can't count the individual particles, but we can measure the molar mass on a balance.
Convert grams to moles?
Conversion of a certain mass of a substance to moles requires knowing the molar mass. Molar mass is given in grams per mole. Dividing the known mass by the molar mass gives the number of moles.
What is the molar mass of sulfur?
The molar mass of sulfur is 32.065. Molar mass is the mass per mole of a substance. In other words, Molar Mass = Mass/Amount of Substance.
What is molar mass of iron?
The molar mass of iron is 55.845g per mol. Molar mass is the mass of a given substance divided by its amount of substance.
What is molar atomic mass?
The atomic (molecular) weight of a substance is its molar mass.
Molar is the total combined mass of a mole of a substance?
mass
The mass of a mole of a substance expressed in grams is called a?
molacular mass
How are molarity and molar mass related for a compound?
The molar mass of a substance is measured in grams per mole written as gmol-1. It is worked out using the Mole formula by dividing mass in grams by the amount in moles.
If 0.274 moles of a substance weighs 62.5 g what is the molar mass of the substance in units of gmol?
The molar mass is 228,1 g.
How do you find moles of hydrogen?
Since molar mass of hydrogen is 1g , the no. of moles = mass of hydrogen given. or No. of moles= Given mass of substance/Molar mass of substance
Which term is used to represent the mass of 1 mole of molecules of a substance?
This is equal to the molar mass of this substance.
What do you mean by molar mass of an element?
Molar mass is defined as the mass of 6.022x1023 atoms/molecules of a given substance.
What is relationship between the formula weight of a substance and its molar mass?
Molar mass is the mass of particles in one mole of a substance. Molar mass is equal to atomic/ molecular/ formula mass in amu. Formula mass is in atomic mass unit while molar mass is in grams .
The molar mass of an element is equal to?
The element's average atomic mass.
