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The molar mass of an element is its atomic weight in grams. The atomic weight is on the Periodic Table. 1 mole C = 12.0107 g C. To calculate the number of moles in 80 g of C, do the following:
80 g C x (1 mole C/12.0107 g C) = 6.66 mole C = 7 mole C*
*This answer has been rounded to the proper number of significant figures. When multiplying or dividing, the answer is rounded to the fewest significant figures used in the calculation. 80 only has one significant figure.
Refer to the related link below concerning significant figures.
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoFor this you need the atomic (molecular) mass of C2H6. Take the number of grams and divide it by the Atomic Mass. Multiply by one mole for units to cancel. C2H6= 30.1 grams
80.0 grams C2H6 / (30.1 grams) = 2.66 moles C2H6
Wiki User
∙ 15y ago5.01 moles methane (CH4)
80.16g CH4 | 1 mol CH4
---- 1 | 16g CH4
Wiki User
∙ 14y agoRAM of C2H5Cl= 12*2+5*1+35.5=64.5
Moles=Grams/Ram
so,
Moles=80/64.5
Moles=1.24
Wiki User
∙ 13y ago80g of Carbon = 6.6607 moles
20g of Hydrogen = 19.8424 moles
Wiki User
∙ 12y agoNo of moles= given mass/molecular mass = 600/30= 20 moles
Wiki User
∙ 11y agoThere are 11 atoms present in this molecular formula.
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What is the total number of moles present in a 52.0 gram sample of NaN3 gram formula mass equals 65.0 mole?
.8 moles
How much does one mole of U.S. Quarters weigh?
We usually are concerned with the gram-mole when we speak of moles. A gram-mole is Avagadro's number of molecules. Avagadro's number is chosen such that the grams in one mole of a substance corresponds to the molecular weight of that substance. Hydrogen gas has an atomic weight of about 2 and a gram-mole of hydrogen gas weighs about 2 grams. Iron has an atomic weight of about 55.845, so a gram-mole of iron weighs about 55.845 grams. If instead of molecules we used the quarter as the unit (defining a "Quarter-mole" as 6.022×1023 quarters, then we could calculate the weight of this new kind of mole. According to the US Mint, one quarter weighs about 5.670 g, so one "Quarter-mole" of quarters would weigh about 5.67x6.022x1023 grams or about 3.41x1024 grams or about 3.41x1021 kg or about 3.41x1018 metric tons. By comparison, the mass of the Earth is about 5.97x1024 kg or 5.97x1021 metric tons (about the same as 1748 "Quarter-moles"). Another way to look at it is to find the total gram-moles of material in one quarter. A quarter weighs 5.67 g and is 8.83% Nickel and 91.17% Copper. Nickel has an atomic weight of 58.6934 while Copper has an atomic weight of 63.546. This means a single quarter has 0.00853 gram-moles of Nickel and 0.081348 gram-moles of Copper. Together, a quarter has 0.089878 moles of metal. It would therefore take 1/0.089878 or about 11.12 quarters to contain one mole of metal. This many quarters would weigh about 63.09 grams.
How many moles are in 47.0 grams of Ag?
The atomic weight of silver is 107,8682 g/molTo convert grams to moles:moles Ag=35,5 g Ag1 mol= 0,329 mol Ag107,8682 g
What is the total number of joules required to melt 100 grams of ice at 0 c to liquid water at 0 c?
226,ooo j
What three things add up to a total of fifty grams?
nothing
What is the total number of moles of NO produced when 1.0 mole of O2 is completely consumed?
The total number of moles of NO produced when 1,0 mole of O2 is completely consumed is 2.
Where does the mole ratio between two chemicals come from?
Mole ratio is the number of moles of a substance divided by the total number of moles of all substances present, times 100.
What is the total number of atoms in 3.5 moles of calcium?
The total number of atoms in 3.5 moles of calcium is 21,0774929995.10e23.
What mass of PCl5 will be produced from the given masses of both reactants which is 839 moles of P4 and 316 moles of Cl2 Answer needs to be submitted in grams though please?
Our lower number of moles is .316 so we will use that. The total molar mass of PCl5 is 208.2. So we will multiply the lower number of moles by our total mass. .316mol X 208.2 g/mol = 65.8g <------ answer.
How do you convert moles into grams per liter?
Since both of them are per liter....then all you need to do is a one step conversion of moles into grams using the molar mass...essentially you are going to multiply the mol/L by the molar mass in grams of the given substance...
What is the mass of kbr in 2.50 moles of the compound?
The mass number of potassium is about 39. The mass number of bromine is about 80. Total is 119. 119* 2.5 = 297.5. So 297.5 grams of potassium bromide has got 2.5 gram moles.
How is the number of moles determined from a known mass?
Number of moles = Total mass/Molar mass
What describes the number of moles of solute over the total number of moles in a solution?
This is the molar fraction.
What is the total number of moles of nacl formed with 2 moles of na2cro4 react completely?
4 moles
How many atoms are found in 600 grams of iron?
To find the number of atoms we need to find number of moles of Fe in 312.0 grams. Molar weight of Fe = 56 Number of moles of Fe in 312 grams = 312/56 =5.571 moles. 1 mole of Fe has Avogadro number of atoms. So 5.571 moles of Fe has atoms = 5.571 * Avogadro number. Avogadro number = 6.022 * 10^23 So total atoms = 5.571 * 6.022 * 10^23 = 33.548 * 10^23 * means multiply, ^ means raised to power.
What is the unit of mole fraction?
Mole fraction is dimensionless. It's the amount of moles of species "A" divided by the total amount of moles in the mixture. So "mole A / mole total" equals "dimensionless". To add clarity in the use of mole fractions, one could add as "unit" mole A / mole "mixture".
Calculate the molarity of a solution of ethanol in water in which the mole fraction is 0.040 assume that the density of water to be one?
It depends a bit on what information you are given. However, the principle is the same in all cases, although how you do the specific calculation may vary a bit.As an example, let's say we have a mixture of 5.00 grams of water and 10.0 grams of ethanol (C2H5OH). What is the mole fraction of the two components?The first thing we must do is convert the number of grams of each substance into moles. To do that, see the Related Question below:How do you convert from grams to moles and also from moles to grams?For water, we have:5.00 grams ÷ 18.015 grams/mole = 0.2775 moles H2OFor ethanol, we have:10.0 grams ÷ 46.068 grams/mole = 0.2171 moles C2H5OHNow we can find the mole ratio, which is defined as follows:Moles ratio of compound X = number of moles of X ÷ total number of moles in mixtureSo the mole ratio of water is: 0.2775 ÷ (0.2775 + 0.2171) = 0.561 or 56.1%and the mole ratio of ethanol is: 0.2171 ÷ ((0.2775 + 0.2171) = 0.439 or 43.9%Check your answer! The total mole ratio for all components MUST add up to 1.00:0.561 + 0.439 = 1.00 Yes!Note that the weight ratio was 1-to-2 (twice as much ethanol as water by weight), but the mole ratio was completely different.
