The answer is 125,65 g.
There are 126 g of Fe in 2.25 moles of Fe.
To calculate this, multiply 2.25 moles by 55.845 g (the atomic weight of Fe) over 1 mole. You then get 125.65125 g, but since the supplied number of moles has three significant digits, your final answer is 126 g.
2.56 X 10^-3 moles iron (55.85 grams/1 mole Fe)
= 0.143 grams of iron
molar mass Fe = 55.845g/mol
2.25 moles Fe x (55.845g/mol) = 126g
The mass of 2,25 moles of manganese sulfide is 175,757 g.
The molar mass of iron is 55.845 g/mol. Multiply the moles of iron by its molar mass.
2.88 mol Fe x (55.845 g Fe)/(1 mole Fe)=161 g Fe (rounded to three significant figures)
The answer is 125,65 g.
For this you need the atomic mass of Fe. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel.82.5 moles Fe / (55.9 grams) = 1.48 moles Fe
just short of a mole. moles is mass/molar mass. mass is 42, molar mass is 44. 42/44
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.
molec weight is 151g/mol. 1.11 moles x 151g/mol is 167.61g Moles is mass / molecular mass
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!
The mass of 1.23 moles of iron is 58,69 g.
Molar mass of iron is 56g. Given mass of iron= 112g No. of moles = Given mass/Molar Mass => 112g/56g= 2 moles
The mass of 4 moles of iron is 224 grams
The molar mass of iron is 55,845 g.Moles of iron = mass of iron/55,845
To determine the mass of Iron, its density is required. The formula used is Volume x Density = Mass. Assuming the Iron is pure and in solid state with a density of approximately 7.87g/cm3 at room temperature, its mass is around 51.2g.
388.grams Fe divided by mass of Fe 388.2g/55.85= 6.95moles of Fe
To calculate the number of moles from grams, you must divide by the substance's molar mass
The molecular mass of iron III nitrate is 241.86g/mol. Mass divided by molecular weight gives moles, which is 0.02481 moles (6/241.86)
If 85.65g of iron forms 118.37g of the oxide, the mass of oxygen combined with this mass of iron is 32.72g. Calculate the number of moles of iron and oxygen which have combined (after all, the formula of a compound shows the ratio of the number of moles of each element combined). Do this by dividing the mass reacted by the Relative Atomic Mass of the element concerned. i.e. For Iron it is 85.65/55.8 and for Oxygen 32.72/16. This gives a mole ratio of Fe:O as 1.53:2.04 or 3:4 Therefore the formula is Fe3O4
Divide it by Avogadro constant.There are 0.0088 moles
Fe, or iron, has a molar mass of 55.845 grams per mole. This means that 0.2 moles is equal to 11.2 grams of iron.
Let's see. 3 moles gold (197.0 grams/1 mole Au) = 591 grams of gold ----------------------------- 10 mole iron (55.85 grams/1 mole Fe) = 558.5 grams of iron ----------------------------- So, 3 moles of gold has more mass that 10 moles of iron. (heavier)