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What are the steps required to find the mass of an element from a given amount of the element in moles?
Wiki User
∙ 13y ago
Verified answer
The mass of 1 mole of the element is used as conversion factor to covert grams to moles. ~APEX
Anonymous
Wiki User
∙ 12y agoBy dividing the known mass by the Atomic Mass of the element, for most elements, or by the molecular mass for those elements known to form polyatomic molecules, such as H, N, O, F, Cl, Br, and I.
The molar mass is used as a conversion factor to convert grams to moles.
Wiki User
∙ 13y agomass (g)
------------------- = moles
molar mass (amu)
For example:
If you have five grams of NH3 , how many moles of the substance do you have?
Answer:
Molar mass of NH3 = 17.01 (approx)
5g
------------ = 0.294 moles
17.01 amu
a+ =207.2
Wiki User
∙ 11y agoCosidering the molar mass and the atomic weights of the elements.
Example: NaCl
Molar mass: 58,44247
Atomic weight of chlorine: 35,4527 (the mass of Cl in a mol of NaCl)
Atomic weight of sodium: 22,98977 (the mass of Na in a mol of NaCl)
Wiki User
∙ 9y agoEach element has a unique molar mass which is given in grams per mole. So if the amount of the substance in moles is known, then the mass in grams can be found by multiplying them together.
Wiki User
∙ 13y agoMultiply the number of moles by the molar mass (mass on the Periodic Table for each element)
Wiki User
∙ 7y ago1 mol of any element is the atomic weight expressed in grams.
Wiki User
∙ 15y ago# moles of element x (mass number of element in grams) = # g of element
Why is a graph of the amount of a particular element in moles versus the mass of element in grams is a straight like?
Because the relation is of proportionality.
What is the amount of substance in a given volume?
That can refer either to the mass, or to the amount of moles.
How do you convert an element to moles?
to convert an element to moles you need to setup and equation, for our example we will be using 5g of O2 or oxygen. You need to know what O2's molar mass is as well, it is 32g. So the equation would be 5g of O2 / 32 = .16 moles of O2. So to convert moles to grams all you do is multiply the moles given by the molar mass of the element/compound and you have your grams Hoped this helped : )
How would we know how many moles are in a certain element?
number of moles = mass of the element/molar mass of the element
What are large numbers placed to the immediate left of the element's symbols in a chemical equation that are used to balance the chemical equation?
They are called coefficients. They represent the number of moles of that element required for the reaction to be completed as written in relation to the number of moles for the other elements. They can also be considered the number of molecules required (different from moles), but most combustion reactions include 1/2 as a coefficient for O2. So don't get confused.
How is the mass in grams of an element converted to amount in moles?
1 mol of any element is the atomic weight expressed in grams.
Why is a graph of the amount of a particular element in moles versus the mass of element in grams is a straight like?
Because the relation is of proportionality.
Where can you find a solution to problem solving number of moles in a given element?
Number of moles = Mass of the sample in g/Molar mass in g
How do you find the moles of a compound when no mass is given?
You have to use the molar mass of the element to convert the total amount of grams in the compound to the amount of grams in the element in the compound. After that use the mole ratio by using the amount of molecules in the reactant and divide it by the amount of molecules (moles in this case) to find the amount of mole... You should use the factor label method so that it's easier to plug into your calculator, just multiply or divide straight through. If you wrote it Out correctly all of your units except for moles should have cancelled out along the way...go chem!
What is the amount of substance in a given volume?
That can refer either to the mass, or to the amount of moles.
A graph of amount of a particle element in moles versuse the mases of the elements in grams is a straight line?
Wangtard
How do you calculate actual yield?
There's a stoichiometry problem for it:(given mass)*(1mol of given)*(# of moles of required)*(molar mass of required)---------------------------------------------------------------------------------(molar mass of given)*(# of moles of given) *(1mol of required)Given mass is the mass you are told, (say 2.0g of HCl) and the "given" is the component (HCl) that you were given the mass of. Required mass is the mass you are trying to find, or your actual yield, and the "required" is the component whose mass you are trying to find. Molar mass can be calculated using the Periodic Table. Add the atomic masses of each element in the component. (For example, the molar mass of HCl is approx. 36.5g).
How do you convert an element to moles?
to convert an element to moles you need to setup and equation, for our example we will be using 5g of O2 or oxygen. You need to know what O2's molar mass is as well, it is 32g. So the equation would be 5g of O2 / 32 = .16 moles of O2. So to convert moles to grams all you do is multiply the moles given by the molar mass of the element/compound and you have your grams Hoped this helped : )
How would we know how many moles are in a certain element?
number of moles = mass of the element/molar mass of the element
How do you find the number of carbon moles in cholesterol c27h46o?
The number of atoms of an element in a molecule is the number subscript immediately following the element symbol in the formula for the molecule. The number of moles of anything in a compound depends on the amount of the compound, which is not stated.
Estimation of the amount of Zn present in the given solution of ZnCl2 using 0.01M EDTA solution.?
The amount of zinc is 0,01 moles.
How many moles of he are in 16 of the element?
There are approximately 4.0 moles of Helium in 16 grams of the element.
