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Number of moles = Total mass/Molar mass

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Q: How is the number of moles determined from a known mass?
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How is a number of moles of an element determined from a known mass?

The number of moles is mass in g/molar mass in g.


How is the number of moles of an element determined from the known mass?

The molar mass is the measurement of mass per one mole of a substance. If the mass of a matter is known, divide it from the molar mass to obtain the number of moles.


How is the number of moles of an element determined froma known mass?

the molar mass is used as a conversion factor to convert grams to moles


How do you determine the number of moles from a known mass?

To calculate the number of moles from a known mass, divide the mass (in grams) by the molar mass (in grams per mole) of that particular compound.


How is a mass of a compound determined the number of moles?

The molar mass of a compound is equal to 1 mol.


How is the mass of a compund determined from the number of moles?

1 mol is equivalent to the molar mass of a compound, in grams.


How is the mass compound determined from the number of moles?

Multiply the number of moles times the molar mass of the compound. Moles cancel and you are left with mass in grams.For example: What is the mass of 2.47 moles of sodium chloride, NaCl?Known: The molar mass of NaCl is 58.44g/mol. (Using atomic weights in grams from the periodic table.)Solution:2.47mol NaCl x 58.44g/mol NaCl = 144g NaCl


How is the number of moles of an element determined from a known mass?

By 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.


How do you calculate molar mass from number of moles?

By dividing the total mass of the number of moles that you are considering by number of moles; the result is the molar mass.


How is the number of moles of an element determine from a known mass?

The mass of 1 mole of the element is used as a conversion factor to convert grams to moles


Converting grams to moles?

Conversion of a certain mass of a substance to moles requires knowing the molar mass. Molar mass is given in grams per mole. Dividing the known mass by the molar mass gives the number of moles.


How do you calculate the number of moles into grams?

number of moles=molar mass/sample mass


How many moles of SO2 are present in 250.0 g?

Number of moles is determined by dividing molar mass into the number of grams. SO2 has a molar mass of 64.066 g. To find the number of moles in 250.0 g of SO2, divide 250.0 g by 64.066 g. This gives you just over 3.9 moles.


What is the mathematical relationship between mass and the number of moles?

mass/molecular weight = number of moles


How many moles in NaCHO3?

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.


How do you find molar mass when you have moles of an unknown?

Divide the mass by the number of moles.


How is the mass number determined?

the mass number is determined on the number of protons and neutrons in the nucleus of the atom.


What is mole-mass stoichiometry?

The number of moles in the equation of B DIVIDED BY the number of moles in the equation of A ANSWER TIMES the molar mass of B OVER 1. A is the the known compound, B is the one your trying to find out.


How do I convert grams into moles?

number of moles = mass of the substance/molar mass of the substance


How do you work out the mole of an element?

the number of moles is mass in grams divided by relative mass example how many moles are there in 42g of carbon? answer 42 / 12 = 3.5 moles mass in grams divided relative mass = number of moles


How many moles are in 24.020 g of Carbon?

number of moles = mass/molecular mass. = 24/12 = ~2 moles


How do work out the amount of substance in moles of a solid?

number of moles = mass of the material/molar mass


How do you convert between the mass and the number of moles of a substance?

Use the molar mass of an element or compound to convert between the mass of a substance and the moles of a substance. Mass(GRAMS)=number of moles x mass(GRAMS)/1 MOLE


Atomic mass is determined by the number of protons pluse the number of?

Atomic mass is determined by the number of protons and the number of neutrons.


If an elements atomic mass and number are known what else can be determined?

Everything about that element, the mass and number are unique. So the number of protons, electrons, neutrons and position in the periodic table will all be known.