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Chemical Engineers sometimes measure substance amount in units of gram-moles, kilogram-moles, pound-moles, or ounce-moles; these measure the quantity of a substance whose molecular weight is not equal to its mass in grams, kilograms, pounds, or ounces. The SI mole is identical to the gram-mole. This is from wikipedia entry on moles. So 1 mole = 1 gram-mole
Wiki User
∙ 15y ago
Wiki User
∙ 16y agoThe measurement in grams depends on the molecule you are using in your conversion. You must find the molecules total Atomic Mass before you begin the conversion.
Example:
How many grams are in one mole of NE?
Solve:
1. NE's atomic mass is 20.180
2. We must set this up so that the moles cancel out:
1 mole NE/1 = 20.180g/1 mole NE
3. Once you cancel out the moles and solve, you are left with 20.180g.
4. ALWAYS take into acount your significant figures!!! This will make the answer 20g.
Overview:
As long as you are converting 1 mole into grams, the answer will just be the atomic mass of the molecule. That's a good shortcut, but remember, it MUST be just 1 mole.
Wiki User
∙ 10y agoMultiply molar mass (gram per mole) of a compound with the number of moles of that compound to find the mass (in grams)
Wiki User
∙ 13y agomoles of X mulitplied by g/mol or the molecular weight of the element/compound X equals grams.
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How do you calculate the number of moles in 2.61 grams of silicon?
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
How you calculate the mass of 1.5 moles of oxygen molecule?
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)
Calculate the mass in grams of 0.0420 moles of copper?
You are given moles and need to find grams, the atomic mass of any element is in g/mol so just go to the periodic tables and Cu which is copper has a mass of 63.546 grams/ mole. Then you know if you multiply Mole * g / mol the moles will cancel out and you will be left with grams so .0420 mol Cu * 63.546 g / mole Cu = 2.669 grams
How many grams are in 0.75 moles of SO2?
.75 moles times 64 grams/mols = 48 grams
How many moles of barium are present in a sample having a mass of 22.3 grams?
# of moles = grams of substance / molar mass of substance molar mass of Barium =137.33 grams/mole #moles of Barium = 22.3 grams/ 137.33 grams/mole = 0.162382582 moles
How do you calculate the gram molecular weight if you have 3.9176 grams and 0.122400 moles?
See the Related Questions to the left of this answer:"How do you convert from grams to moles and also from moles to grams?"
How many moles are in 1.5 grams of iron?
To calculate the number of moles from grams, you must divide by the substance's molar mass
Can you calculate the number of moles of magnesium used grams permol?
Yes
How many moles of Pb are in 2.3456g of Pb?
2.3456 grams lead (1 mole Pb/207.2 grams) = 0.01132 moles of lead =================
What is the mass in grams of 3.60 moles of H2SO4?
See the Related Questions link to find out how to calculate the answer!
How do you calculate the number of moles in 2.61 grams of silicon?
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
How many moles of KNO3 are in 6.5 grams?
The molecular weight of potassium nitrate (KNO3) is 101.1 grams/mole.K = 39.1 + N = 14.0 + O = 3*16.0 = 101.1Now divide 6.5 by 101.1 to calculate # of moles => 0.064 moles KNO3
How do you calculate the number of moles in 0.998 grams of CH4O?
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
Calculate the number of moles in 0.135 grams of HNO3. Choose the correct answer.?
2.14 x 10^(-3)
How you calculate the mass of 1.5 moles of oxygen molecule?
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)
Calculate the molality of a solution of 44.9 grams of C10H8 in 175 grams of C6H6?
Molality = moles of solute / kg of solvent solute = 44.9 grams of C10H8. There are approx 128 g/mole in C10H8. 44.9 grams x 1/128 moles/gram = 0.351 moles (approx) convert 175 grams C6H6 into 0.175 kilograms Molality = 0.351 moles solute (or C10H8) / 0.175 kg solvent (C6H6) Answer is 2.00 Molal
If krypton is 30.00 how many grams are their?
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.
