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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.
.410 grams Fe / (55.9 grams) = .00733 moles Fe
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How many moles of nitrogen atoms are present in 53.55 g of FeNO32?
Molar mass of Fe(NO3)2 is 55.85 + 2(14.00 + 3(16.00)) = 179.85 g/mol Therefore, number of moles of Fe(NO3)2 present is 53.55/179.85 = 0.2977 mol For each molecule of Fe(NO3)2, there are two atoms of nitrogen associated with it. Therefore, there are 0.2977*2 = 0.5954 mol of nitrogen atoms
What is the mass of silver bromide precipitated from 2.96 g of iron bromide?
This is an incomplete question for several reasons. Iron bromide can be FeBr2 or FeBr3 and this will influence the answer. Also, in order to precipitate silver bromide, one would add silver nitrate, but it isn't stated how much silver nitrate is used. Assuming FeBr2 is used, and there is excess AgNO3, then .... 2AgNO3 + FeBr2 ----> 2AgBr(s) + Fe(NO3) moles FeBr2 = 2.96 g x 1 mol/216 g = 0.0137 moles moles AgBr produced = 2 x 0.0137 = 0.0274 moles mass AgBr produced = 0.0274 moles x 188 g/mole = 5.15 grams <---answer
How many kilograms of iron are in 639 kilograms of Fe2O3?
First you need to find the atomic weights of all the elements involved and add them up (including how many atoms of the same element there are) to find the total molecular mass.Fe = 55.9 grams × 2 atoms = 111.8 gramsO = 16 grams × 3 atoms = 48 grams________________________________________Fe2O3 = 159.8 gramsThen you take the weight of iron in one mole of the compound and divide it by the total weight to get its percent composition.111.8 grams Fe ÷ 159.8 Fe2O3 grams = .6996 = 69.96% Fe in Fe2O3Then we apply this percentage to 639 kg. The thought process is as follows: if there is 69.96% of iron in Fe2O3 by weight, then 69.96% of 639 kg of the substance is iron.69.96% of 639 kg = .6996 × 639 = 447.1 kilograms of Fe in 639 kilograms of Fe2O3
In the reaction FeCl2 plus 2NaOH gives iron II hydroxide plus 2NaCl 6 moles of FeCl2 are added to 6 moles of NaOH how many moles of FeCl2 would be used up in the reaction?
3 mole FeCl2 will react with 6 mole NaOH (stoechiometric mole ratio: 1 FeCl2 to 2 NaOH), so 3 mole FeCl2 (= 6 added -3 used) will be left over.
How many atoms are in 1 mole of Fe?
Use the Avogadro constant 2.50 x 10^20 atoms Fe x ( 1 mol Fe / 6.023 x 10^23 atoms) =4.15 x 10^-4 mol
How many moles are in 23 g of Fe?
23 grams iron ( 1mole Fe/55.85 grams) = 0.41 moles of iron
How many moles grams are in 24.6 moles of Fe?
Find iron (Fe) on the periodic table the biggest number (at the bottom) is the mass number 1 mole is that number in grams. you can work it out from there.
How many moles are present in 1.68g of iron?
388.grams Fe divided by mass of Fe 388.2g/55.85= 6.95moles of Fe
How many moles Fe are in a sample of Fe2O3 that contains 100g O?
100 grams oxygen (1 mole O/16 grams)(2 mole Fe/3 mole O) = 4.17 moles iron --------------------------
What is the number of moles of 200g of Fe?
For this you need the atomic (molecular) mass of FeCl3. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel. FeCl3=162.4 grams .200 moles FeCl3
How many atoms are present in 400g Iron?
1 mole Fe = 6.022 x 1023 atoms Fe1 mole Fe = 55.845g Fe (atomic weight in grams)Convert grams Fe to moles Fe.400g Fe x (1mol Fe/55.845g Fe) = 7.16mol FeConvert moles Fe to atoms Fe.7.16mol Fe x (6.022 x 1023atoms Fe/1mol Fe) = 4.31 x 1024 atoms Fe
What is Fe(NO3)2?
Fe(NO3)2molecular weight. Molar mass of Fe(NO3)2= 179.8548 g/mol. This compound is also known as Iron(II) Nitrate. Convert grams Fe(NO3)2to moles or moles Fe(NO3)2to grams.
How many atoms are found in 600 grams of iron?
To find the number of atoms we need to find number of moles of Fe in 312.0 grams. Molar weight of Fe = 56 Number of moles of Fe in 312 grams = 312/56 =5.571 moles. 1 mole of Fe has Avogadro number of atoms. So 5.571 moles of Fe has atoms = 5.571 * Avogadro number. Avogadro number = 6.022 * 10^23 So total atoms = 5.571 * 6.022 * 10^23 = 33.548 * 10^23 * means multiply, ^ means raised to power.
What does 7.4 moles of iron weigh in grams?
7.4 moles iron (55.85 grams/1 mole Fe) = 413.29 grams iron
How many Fe atoms are in 0.25 moles of Fe?
To determine the number of moles of Fe that can be made from 25 moles of Fe2O3, you need to write the balanced chemical equation for producing O2 from Fe2O3. 2Fe2O3 = 4Fe + 3O2, which means that 2 moles of Fe2O3 will produce 4 moles of Fe and 3 moles of O2 . Set up a proportion. 3 moles of O2 ÷ 2 moles of Fe2O3 = x moles of O2 ÷ 25 moles of Fe2O3 Cross multiply and divide. 3 moles of O2 * 25 moles of Fe2O3 ÷ 2 moles of Fe2O3 = 37.5 moles of O2 produced.
What number of Fe atoms and what amount of Fe atoms are in 500 g of Fe?
Known/Given:1 mole of Fe = 55.845g Fe (its atomic weight in grams)1 mole of Fe = 6.022 x 1023 atoms Fe (from Avogadro's number)Convert grams Fe to moles Fe.600.0g Fe x 1mol Fe/55.845g Fe = 10.74mol FeConvert moles Fe to atoms Fe.10.74mol Fe x 6.022 x 1023atoms Fe/1mol Fe = 6.468 x 1024atoms Fe
How many moles of Fe are present in 30 grams in rust?
This amount may be different because rust is not a clearly definite compound.
