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The mass of 0,819 mole of helium is 3,278 131 g.
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How do you find the mass of an atom with only the molar mass given?
Molar mass of an element is the atomic weight on the periodic table in grams. 1 mole of atoms of an element is 6.022 x 1023 atoms. To find the mass of one atom of an element, divide the element's molar mass by 6.022 x 1023 atoms.Example:Sodium, Na, has a molar mass of 22.989770g/mol (atomic weight in grams)1 mole Na atoms = 6.022 x 1023 atomsSolution:22.989770g/mol x 1mol/6.022 x 1023 atoms = 3.818 x 10-23g/atom
How is molar mass of an element used to convert form number of moles to mass in grams?
The molar mass of an element indicates how much mass is in one mole of the element. From that we can make a ratio to convert moles of a substance to mass in grams.For example: How many grams are in 3.54 moles of oxygen?You find on the periodic table that the molar mass of oxygen is 16.00. This means that there are 16.00 grams in 1 mole of oxygen.From this, we can make a ratio:16.00 g / 1 mol O. Now we can use it to convert mol to g by multiplying the given amount of moles by , keeping in mind that we want to cancel the mol unit. To do that, we keep the mol unit in the denominator of the ratio.3.54 mol O x 16.00 g = 56.64 g1 mol* remember to follow the rules of significant figures! We're given 3.54 moles, which has 3 sig figs. In the entire problem, 3.54 has the least sig figs, so the answer must contain 3 significant figures: 56.6 g
What is the mass in grams of 1.00 mol Al?
7 X 102 g Al this is the awnser using significant figures
What is the mass of 100g of ga?
the atomic mass of gallium is approximately 69.72 g/mol therefore the mass of 100 grams of gallium would be 100g divided by 69.72g/mol which gives us approximately 1.43 moles
What unit measures the mass of a single atom?
They are measured in amu (atomic mass units). However if you're taking Chemistry as a course, they are also measured in g/mol (grams per mol) which is equivalent.
What does an element's molar mass tell you about the element?
Molar mass is the mass in grams of 1 mol of subatace, idk if that helps
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.
What is the mass in grams of 0.0135 mole of the element Na?
molar mass Na = 22.99g/mol (atomic weight in grams) 0.0135mol Na x (22.99g/mol) = 0.310g Na
What is the mass in grams of 5.01 mol of xenon?
The mass in grams of 5,01 mol of xenon is 657,778 g.
What is the mass of 0.41 mol of the element potassium?
The gram-atomic mass of potassium is 39.098. This number multiplied by 0.41 = 16 grams.
What is the molar mass for tetraphosphorus trisulfide P4S3?
To determine the molar mass for any compound, you multiply the molar mass of each element (atomic mass in grams) times its subscript, which represents the number of atoms of that element. Then add the result for each element. Molar Mass of P4S3 (4 atoms x 30.974g/mol P) + (3 atoms x 32.06g/mol S) = 123.90g/mol P + 96.18g/mol S = 220.08g/mol P4S3
How do you find the moles of a given element?
One takes the atomic mass of that element (the number under the element on a periodic table, measured in amu). That number is the number of grams of the element it takes to make one mole. in other words:X grams (of element)(Atomic Mass of element)= --------------1 mol (of element)
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
What is lithium's molar mass?
Lithium's molar mass is 6.941g/mol. To find the molar mass of an element, take the atomic weight on the periodic table in grams.
What is the mass in grams of 6.64 mol W?
mol = mass/Mr mol x Mr = mass Mr of tungsten is 183.84 so 1.2 x 183.84 = 220.61g
What is the mass of five grams of NaCl?
The molar mass of an element is its atomic weight from the periodic table in grams. The molar mass of a compound is the sum of the atomic weights in grams of each element times the subscript for each element. The mass of 1 mole of NaCl = (1 x 22.989770g/mol Na) + (1 x 35.453g/mol Cl) = 58.443g/mol NaCl. 0.5mol NaCl x (58.443g NaCl/1mol NaCl) = 29g NaCl or 30g NaCl using significant figures.
How is the mass in grams of an element converted to the amount of moles?
The formula is number of moles = mass / molecular mass. So say we have 1 mole of water. We look at the periodic table and molecular mass is 1+1+16 = 18g/mol. 1 mole x 18g/mol is 18 grams.
