This depends on what element/molecule you're converting.
You use the molar mass. (The sum of Atomic Mass of all the elements you're using.) Divide .00336 (since that what I'm assuming you meant) by the molar mass.
For an example of one element, it would look like this:
.00336 grams of Carbon converted to moles.
Carbon's molar mass is approximately 12.
(.00336)/ (12) = 2.8 X10-4 (or .00028) moles.
For an example of a molecule, it would look like this:
.00336 grams of Ammonium Chloride converted to moles.
Ammonium: NH4
Ammonium Chloride: NH4Cl
N's molar mass: 14
H's molar mass: 1 (but there's 4 of them, so multiply by 4): 4.
Cl's molar mass: 35.45
Add them all together: 53.45
(.00336g)/53.45 = 6.29 x 10-5 (.0000629) moles.
the atomic number of zinc is 30 so 1.6 moles of Zn= 1.6x30grams
You need to know moles of what -- for example a mole of water weighs 18 g; a mole of FeO weighs 57.8 g!
FeCl3 ? 1.1 grams FeCl3 (1 mole FeCl3/162.2 grams) = 0.0068 moles of FeCl3 ------------------------------------
Not many! 5.0 grams CaBr2 (1 mole/199.88 grams CaBr2) = 0.025 moles CaBr2
Multiple the moles of K2SO4 by the molecular weight of 174.2592 grams. That should equal 210.85 grams.
5.67 grams
For this you need the atomic (molecular) mass of CO2. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel. CO2=44.0 grams454 grams CO2 / (44.0 grams) = 10.3 moles CO2
The number 2.20 moles of Sn equals 261.14 grams. This is a taught in biology.
Meaningless unless you specify the type of molecule.
1 mol of any element is the atomic weight expressed in grams.
Molarity = moles of solute/Liters of solution. get moles KI 2.822 grams KI (1 mole KI/166 grams) = 0.017 moles KI ( 67.94 ml = 0.06794 Liters ) Molarity = 0.017 moles KI/0.06794 Liters = 0.2502 M KI
mol = mass/Mr If the Mr and number of moles of a substance is known then the mass can be calculated. example:- if we have 1 mole of Na, how many grams do we have? mass = mol x Mr mass = 1 x 23 mass = 23g
16 grams of oxygen how many moles is 0,5 moles.
Find moles potassium iodide first.2.41 grams KI (1 mole KI/166 grams) = 0.01452 moles KIMolarity = moles of solute/Liters of solution ( 100 ml = 0.1 Liters )Molarity = 0.01452 moles KI/0.1 Liters= 0.145 M KI solution================
2.8 moles of gold would be 550g of gold. Multiplying the amount of moles by the molar mass (197.0 grams/moles) will give you the grams by cancelling out the moles units.
The moles are converted into a number of particles by multiplying 6.02 by 10(with the power of 23)
Hey i am not in your class, but i took AP Chem in high school with AP Bio and i think i have your solution. The thing is when you look at Grains (a unit of measure that pharmacy's [pills] use) that can be converted into grams. Now once you got those grams you want to convert them to kilograms. From then Kilograms to Moles and Moles can then be converted into Molecules =) (remember moles = 6.24 X 10 ^ 23) =) Bye!!
See the Related Questions to the left of this answer:"How do you convert from grams to moles and also from moles to grams?"
.75 moles times 64 grams/mols = 48 grams