To convert moles of a substance into grams you first need to figure out its molecular mass. Then you can use this equation:
grams(g)=moles(n) X molecular mass
For example, 1 mole of Carbon (which has a molecular mass of 12) has a mass of 12 grams.
You use the Atomic Mass, which is found on the Periodic Table. One mole of an element has the mass reported on the periodic table, usually under the symbol of that element. If you have a compound, add the masses of each of its components. For example, if you have 1 mole of C2H6, its mass would be equal to 2(12.01g/mol C)+6(1.01g/mol H). If you had two moles of C2H6, you would multiply 2 mol C2H6 (2(12.01g/mol C)+6(1.01g/mol H))
In order to convert an element's mass to moles, you must use the molar mass (either 1 mole/ ___g or ___g/ 1 mole).
For example, when converting 300g or Hydrogen gas to moles, you must multiply that initial amount by the molar mass of H2. So 300g H2 (1mol/ 2gH2) = 150 mol H2.
# of moles = Mass÷ Formula weight
Example:
6 grams of Carbon atoms
Carbon has an atomic mass of 12 grams so according to the Equation
# of moles = 6÷ 12 = 0.5 moles
For a compound such as CO2 , Formula weight = ( 1 mole of carbon atom weighs 12 grams + 2 moles of oxygen atoms weighs 32 grams ) 44 grams.
Example: 24 grams of carbon dioxide = 24÷ 44 = 0.5454moles
Divide mass by number of moles to find the value of molar mass.
You just have to know the formula:
n (mol) = m (mass in gram) / M (molar mass in gram per mole)
So m = n x M
or M = m / n
by multiplying molar mass of that thing with the number of moles
EG:- what is the mass of 2 moles of calsium sulphate?
2mol *136.14gmol-1 =272.28 g
which means if one mole weight 136.14g(x) then 2 moles weight x*2
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to convert mass into moles you divide by the molar mass. You cannot convert molar mass directly to moles.
To convert mass to moles, you use the equation n= m/M
n is moles, m is mass, M= Molar mass, which is the mass of the atoms in the formula or substance.
The mole is the molar mass of a compound in grams.
Multiplication by what is called a conversion factor. A moles x (bbb grams / 1 mole) in which bbb is the molar mass of the substance.
just short of a mole. moles is mass/molar mass. mass is 42, molar mass is 44. 42/44
Using the formula number of moles = mass divided by molar massso mass = number of moles X molar massFind molar mass by adding up the masses of all the atoms in your substance.A good way to remember this is as the formula g/mw = moles, and the mnemonic for this is"Mine workers (mw= molecular weight) under ground (grams of compound you are dealingwith = Moles!
You must first calculate the molar mass of the substance. To do so, you add up the molar masses of all the elements that make up the compound, multiplied by the number of atoms of that element in one molecule of the substance. For example, AgNO3 has a molar mass of about 169.8 amu. In one molecule of AgNo3, there is one atom of Silver (molar mass 107.8), one atom of Nitrogen (molar mass 14), and three atoms of Oxygen (molar mass 16). Multiply the molar mass of Silver by the number of Silver atoms (1), multiply the molar mass of Nitrogen by the number of Nitrogen atoms (1), multiply the molar mass of Oxygen by the number of Oxygen atoms (3), add the numbers up and you have the molar mass of the substance (169.8). Step 2 is easy. To convert from grams to moles, you divide the number of grams by the molar mass (units for molar mass are grams per mole, so dividing by molar mass cancels the grams). To convert from moles to grams, you multiply by the molar mass.
The molar mass of an element indicates how much mass is in one mole of the element. From that we can make a ratio to convert moles of a substance to mass in grams.For example: How many grams are in 3.54 moles of oxygen?You find on the periodic table that the molar mass of oxygen is 16.00. This means that there are 16.00 grams in 1 mole of oxygen.From this, we can make a ratio:16.00 g / 1 mol O. Now we can use it to convert mol to g by multiplying the given amount of moles by , keeping in mind that we want to cancel the mol unit. To do that, we keep the mol unit in the denominator of the ratio.3.54 mol O x 16.00 g = 56.64 g1 mol* remember to follow the rules of significant figures! We're given 3.54 moles, which has 3 sig figs. In the entire problem, 3.54 has the least sig figs, so the answer must contain 3 significant figures: 56.6 g
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.
To convert grams into atoms, you have to convert them into moles first. Get the molar mass and multiply it by the number of moles to get the atoms.
The molar mass of a compound is expressed in grams.
#moles = mass/molar mass mass = #moles*molar mass mass = .10 moles*(atomic weight of na+atomic weight of N+3(atomic weight of oxygen)
the molar mass is used as a conversion factor to convert grams to moles
Moles = Mass (g) x Molar mass (g)
Each compound has a specific molar mass; no conversion.
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
Multiplication by what is called a conversion factor. A moles x (bbb grams / 1 mole) in which bbb is the molar mass of the substance.
Convert grams into moles. To do so, you divide mass by the molar mass of the substance.
Molar mass of ammonia = (14.01 + 3.03) (Molar mass of nitrogen + 3 times molar mass of hydrogen, as chemical formula of ammonia is NH3). Molar mass= 17.04 Molar mass x moles = mass 17.04 x 3 = 51.12 Mass of 3 moles of ammonia is 51.12g.
to convert an element to moles you need to setup and equation, for our example we will be using 5g of O2 or oxygen. You need to know what O2's molar mass is as well, it is 32g. So the equation would be 5g of O2 / 32 = .16 moles of O2. So to convert moles to grams all you do is multiply the moles given by the molar mass of the element/compound and you have your grams Hoped this helped : )