Use the equation;
mass=moles*gramformulamass
or
m=n*gfm
m=2*55.8 = 111.6g in two moles of Iron
gfm or the molecular mass of a compound can be found by adding the Relative atomic masses of each element in the compound together.
For example - Carbon dioxide
CO2
The formula contains 1 Carbon atom and 2 Oxygen atoms
(RAMs should be found in a datasheet/book or provided in the question. RAM = relative Atomic Mass)
RAM Carbon = 12 RAM Oxygen = 16
gfm of CO2 = 12 + 32 = 44
or 1mole of CO2 = 44g
One mole of Fe, Iron, weighs about 55.845grams.
One mole of any element equals it's atomic mass in grams.
Examples:
A mole of an element is X grams of the element, where X is the number of the elements atomic mass.
The atomic mass of iron is 55.85, so one mole of iron is 55.87 grams.
Two moles of iron is 111.7 grams.
101.7 grams is 101.7/55.85 moles = 1.82 moles.
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 grams Fe / (55.9 grams) = 1.48 moles Fe
The molecular weight of iron (Fe) is 55.85. Hence, you would have to measure out 55.85 grams of iron to get one mole of it.
how y hydrogen atoms are in 35.0 grams of hydrogen gas
0,1 mole of iron contain 5,5845 grams iron.
One mole of iron atom weighs 56g
0.03
79.9
2Fe + 3S >> Fe2S3 48.0 grams S (1 mole S/32.07 g)(2 Fe/3 mole S)(55.85 g/1 mole Fe) = 55 .7 grams of iron needed
Balanced equation. 2Fe + 3Br2 -> 2FeBr3 need limiting reactant; suspect iron 9.20 mole Fe (3 mole Br2/2 mole Fe) = 13.8 moles the stated iron moles are not nearly this much; iron limits and drives the reaction looks one to one, so................ 9.20 moles Fe (2 moles FeBr3/ 2mole Fe) = 9.20 moles FeBr3 produced
1 mole of any substance contains 6.02x1023 representative particles. That is called Avogadro's number, and it's one of the most important constants in science. So, 3 moles of carbon would be 3 times that, which would be 18.06x1023, which simplifies to 1.806x1024 atoms.
It depends how much sulphur dioxide you have. If you mean how many atoms does a sulphur dioxide molecule have the answer is 3. 1 sulphur and 2 oxygen atoms.
a mole of deuterium weight 2,014g
It is 55.8 grams.
The amount of particles (any kind) in ONE mole (of any substance) is always equal to Avogadro's number: 6.02*10+23 (This is the definition of a 'Mole'. It is just a number like a 'dozen' -12- or 'gross' -144-, though much larger. There is nothing 'chemical' in this number, however) So, here is your answer: 0.56 mole = 0.56 * 6.02*10+23 = 3.37*10+23
1 mole of O (oxygen) weighs 15. 9996 grams. By definition, 1 mole of any element is equal to its atomic weight expressed in grams. 1 mole is equal to 6.02 x 1023 atoms of that element.
You need to know what elements the coin is made up of (ie. what percent is iron and what percent is copper). You'd then need to weigh the coin out. If you wanted to know how many iron atoms there are, then you'd calculate how much iron there is and convert that to moles and then to atoms using avogadro's number.
79.9
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
A mole weighs 58 grams
3.017005 gm
1.0088525g 0.0010088525kg
6 feet
Use stoichometry to figure this out. 1 mole Fe * 56 g Fe ...............1 mole Fe