85.2 gram LiF sample is equivalent to 3,28 moles.
To determine the number of moles of acetylsalicylic acid in the sample, we first need to calculate the molar mass of C9H8O4 (aspirin). Molar mass of C9H8O4 = (912) + (81) + (4*16) = 180.16 g/mol Next, we calculate the mass of acetylsalicylic acid in the sample: Mass of acetylsalicylic acid = 75.2% of 1 gram = 0.752 grams Finally, we find the number of moles using the formula: Number of moles = Mass / Molar mass Number of moles = 0.752 g / 180.16 g/mol ≈ 0.0042 moles Therefore, there are approximately 0.0042 moles of acetylsalicylic acid in the sample.
how many moles are in 95.0 gram of octane?
"The amount of grams in one mole a substance" is themolar mass (the mass of 1 mole) of a substance.The molar mass of Lithium oxide (Li2O) is 29.881 g/molThe molar mass of a compound can be calculated by adding the molar masses of the compound's constituent elements.In this case :molar mass of lithium oxide= 2x(molar mass of lithium)+ (molar mass of oxygen)= 2x(6.941) + 15.999=29.881 g/molNotes:* the molar masses of elements are found in the periodic table. * Notice the subscript "2" in the chemical formula of lithium oxide , Li2O. This subscript indicates that two lithium atoms are involved in each lithium oxide atom.Hence, we multiply the molar mass of of lithium by "2" when calculating lithium oxide's molar mass.
The answer is 0,111 moles.
A 88,1 gram sample of Ag contain 4,9185.10e23 atoms.
To calculate the number of atoms in a sample of lithium, you first find the moles using the molar mass. Lithium's molar mass is approximately 6.94 g/mol. Then, use Avogadro's number (6.022 x 10^23) to convert moles to atoms.
For an element such as lithium, the technically correct term is "gram atomic mass" instead of "mole", and for lithium, the gram atomic mass is about 6.941. Therefore, the answer to the question is (5.48)(6.941) or 37.5 grams, to the justified number of significant digits.
There are 1.5 moles of water molecules in a 27 gram sample of water. This is calculated by dividing the mass of the sample (27 grams) by the molar mass of water (18 grams/mol).
5.0 mol Li * 6.941 g/mol Li = 34.705 = 35 g Lithium
To calculate the total number of moles in the 52.0 gram sample of NaN3, divide the given mass by the molar mass of NaN3. First, determine the molar mass of NaN3 by summing the atomic masses of its elements (sodium, nitrogen, and three times the atomic mass of nitrogen). Then, divide the mass of the sample by the molar mass of NaN3 to find the number of moles.
It depends on what the substance is. For the elements, the number given as the atomic weight for an element on the Periodic Table is also the number of grams/mole. For example, lithium has an atomic weight of 6.941, so one mole of lithium would be 6.941 grams of lithium. In theory you can have a mole of anything -- electrons, ions, shoes, dollar bills, cars, etc...
To calculate the number of moles of ammonium ions in a 22.5 gram sample of ammonium carbonate, you need to first determine the molar mass of ammonium carbonate. Then, divide the given mass by the molar mass to find the number of moles. After that, since there are 2 ammonium ions in one molecule of ammonium carbonate, you will need to multiply the result by 2 to determine the number of moles of ammonium ions.
The gram Atomic Mass of lithium is 6.941; this is the amount of lithium that contains Avogadro's Number of atoms. Therefore, in 18.7 g of lithium, there will be (18.7)/(6.941) times Avogadro's Number of atoms, or about 1.62 X 1024, to the justified number of significant digits.
YE you do divide by 2
The formula of sodium fluoride is NaF; its gram formula mass is 41.9882.
The element with the most moles of atoms in a 1.0 gram sample would be Mo (Molybdenum) as it has the highest molar mass among the given elements (95.94 g/mol). This means that 1.0 gram of Mo would contain the most moles of atoms compared to Se (Selenium), Na (Sodium), and Br (Bromine).
To determine the number of moles of acetylsalicylic acid in the sample, we first need to calculate the molar mass of C9H8O4 (aspirin). Molar mass of C9H8O4 = (912) + (81) + (4*16) = 180.16 g/mol Next, we calculate the mass of acetylsalicylic acid in the sample: Mass of acetylsalicylic acid = 75.2% of 1 gram = 0.752 grams Finally, we find the number of moles using the formula: Number of moles = Mass / Molar mass Number of moles = 0.752 g / 180.16 g/mol ≈ 0.0042 moles Therefore, there are approximately 0.0042 moles of acetylsalicylic acid in the sample.