1 mol of an element is equal to it's atomic weight, but with grams instead of amu (or daltons) as the unit.
For example, with copper (Cu), 63.5 amu is its rough atomic weight, which means it weighs roughly 63.5g per mol.
Then we just need to divide through.
63.5 x 0.345 = 21.9g
For this you need the Atomic Mass of Cu. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel.
3.5 moles Cu × 63.5 grams = .0551 grams Cu
For every 1 mol of Cu, it has 63.55 grams.
Therefore, using stoichiometry to cancel out the moles, you'd multiply 7.70 mols of Cu to 63.55 grams.
About 489 grams of Cu.
It gives the mass of copper present in .345 moles of it.
0.345 x63.5 =21.92337g
Just smoke weed
To calculate the number of moles from grams, you must divide by the substance's molar mass
Yes
Number of Moles = concentration * volume (in litres)
The number of grams in 20 moles of carbon is 240,22 g.
2.3456 grams lead (1 mole Pb/207.2 grams) = 0.01132 moles of lead =================
To calculate the number of moles from grams, you must divide by the substance's molar mass
Yes
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
See the Related Questions to the left of this answer:"How do you convert from grams to moles and also from moles to grams?"
2.14 x 10^(-3)
For this you need the atomic (molecular) mass of CH4O. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel. CH4O=32.0 grams.998 grams CH4O / (32.0 grams) =.0312 moles CH4O
A mole is a defined number of atoms/molecules of an element/compound. Therefore, the number of moles of NaCHO3 will depend on the mass of NaCHO3 that you have. To calculate the number of moles in a known sample, divide the mass of the sample (in grams) by the molecular weight.
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
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)
If the molecular weight is 30 grams/mole, you need to know the number of moles to calculate the weight. If you have 1 mole, this will yield 30 grams of krypton.
The number of grams in 4.56 moles of H2O2 would be 7.57. This is a math problem.
There are 1.0001 moles.