2.56 X 10^-3 moles iron (55.85 grams/1 mole Fe)
= 0.143 grams of iron
number of moles=molar mass/sample mass
No. of moles = Mass (grams) x Mr
Grams = Moles * Molar MassMoles = 2.50Molar Mass of Calcium =40.1 (Can be found on periodic table = atomic mass)2.50 * 40.1 = 100.25 grams of Calcium
Divide the mass (grams) by the molar mass (grams per mol)
To calculate the number of moles from a known mass, divide the mass (in grams) by the molar mass (in grams per mole) of that particular compound.
To calculate the number of moles from grams, you must divide by the substance's molar mass
No. of moles= Given mass of substance/Molar mass of substance. No. of moles of carbon dioxide in 33 grams= 33/44=0.75 moles
Grams/Molar mass = moles
Iron chloride has a molar mass of 162 grams per mole. To find the number of moles, divide the mass of the sample by the molar mass.
For this you need the atomic (molecular) mass of CaCO3. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel. CaCO3= 100.1 grams2.50 moles CaCO3 Ã— (100.1 grams) = 250.25 grams CaCO3
You divide the 6.073 by 6.022x1023 (avagadros number) to get the moles, then multiply by molecular mass (18) to get mass in grams
It depends on the element or compound being weighed. To calculate the number of moles from grams, you must divide by the substance's molar mass.
0.54 moles of atoms are in 7.00 grams of Carbon 13. The formula used to calculate the number of moles of atoms is No. of moles = Mass divided by Relative tomic Mass or 7 divided by 13.
Multiply the molar mass value ( 32.0 grams per mole O2) by the number of moles (1.5 mole) to get its mass (48.0 grams for 1.5 mole O2)
Molarity is moles/liter. From moles/liter, you can calculate mass in grams by converting the moles to grams using molar mass, and then use the volume to calculate the final mass in that volume. Thus,moles/liter x gram/mole x liters = mass in grams
To convert grams to moles you need mercury's atomic mass: 200.59 grams/mole. You can then take your measurement and divide it by the atomic mass to get moles.Grams Ã· Atomic mass = Moles50.15 grams Ã· 200.59 grams = 0.2500 moles Hg
Find molecular weight:K- 39.1C- 12.0 Ãƒâ€” 2= 14.0H- 1.01 Ãƒâ€” 3= 3.03O- 16.0 Ãƒâ€” 2= 32.0Total molecular mass: 49.0 gramsFormula of moles ---> grams:moles Ãƒâ€” molecular mass.250 moles Ãƒâ€” 49.0 grams = 12.3 grams KC2H3O2
For this you need the atomic mass of Mg. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel.4.637 grams Mg / (24.3 grams) = .191 moles Mg
For this you need the atomic mass of Si. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel.2.61 grams Si / (28.1 grams) = .0963 moles Si
For this you need the atomic mass of Li. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel.6.35 grams Li / (6.94 grams) = .915 moles Li
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Atomic mass of carbon: 12.0Formula of grams ---> moles: grams / atomic mass = moles3.00 grams Carbon / 12.0 grams = .25 moles Carbon
52.1grams. moles = mass (in grams)/RMM (relative molecular mass) 1.3 moles = mass (in grams)/ 40.078 mass = 40.078 x 1.3 = 52.1grams
# of moles = grams of substance / molar mass of substance molar mass of Barium =137.33 grams/mole #moles of Barium = 22.3 grams/ 137.33 grams/mole = 0.162382582 moles
mass in grams divided by atomic weight = moles