The mass of one mole of oxygen atoms is listed on the periodic table (15.999g). Multiply this by three. Be careful. Oxygen is almost never found outside of a molecule. If you are looking for the mass of three moles of oxygen gas, that is three moles of O2. So, you will need to multiply the mass of the atom by two, then multiply by the number of moles.
There are 1.5 x 10^23 atoms of oxygen in 44g of CO2. This can be calculated by converting the mass of CO2 to moles, using the molar mass to find the number of moles of oxygen, and then multiplying by Avogadro's number to find the number of atoms.
In one mole of sodium dichromate (Na2Cr2O7), there are 7 oxygen atoms. To find the number of moles in 7.00 g, you need to divide 7.00 g by the molar mass of Na2Cr2O7 to find the number of moles of Na2Cr2O7. Then, multiply the number of moles by 7 to find the number of oxygen atoms in 7.00 g of sodium dichromate.
There are 2 moles of oxygen atoms in 35.2 g of oxygen. This is calculated by first finding the molar mass of oxygen (16 g/mol), then using the formula: moles = mass / molar mass.
To find the number of moles of atoms of oxygen in sulfuric acid (H2SO4), we need to calculate the molar mass of sulfuric acid. The molar mass of sulfuric acid is 98 g/mol. Oxygen constitutes 64 g/mol in sulfuric acid. Therefore, in 49 grams of sulfuric acid, there are 49/98 = 0.5 moles of sulfuric acid. Since each mole of sulfuric acid contains 4 moles of oxygen atoms, there are 0.5 moles x 4 = 2 moles of oxygen atoms in 49 grams of sulfuric acid.
There are 6 moles of oxygen atoms in 2 moles of potassium dichromate (K2Cr2O7). Each mole of K2Cr2O7 contains 7 oxygen atoms, so 2 moles would contain 14 oxygen atoms. The molar mass of oxygen is 16 g/mol, so there would be 224 grams of oxygen in 2 moles of K2Cr2O7.
There are 1.5 x 10^23 atoms of oxygen in 44g of CO2. This can be calculated by converting the mass of CO2 to moles, using the molar mass to find the number of moles of oxygen, and then multiplying by Avogadro's number to find the number of atoms.
The molar mass of potassium permanganate (KMnO4) is 158.034 g/mol. The molar ratio between oxygen atoms and KMnO4 is 4:1. Therefore, in 90 g of KMnO4, there are 90/158.034 moles of KMnO4. Multiply this by 4 to find the number of moles of oxygen atoms, then multiply by Avogadro's number to find the number of oxygen atoms.
The molar mass of oxygen is approximately 16 g/mol. Therefore, the mass of 0.2 moles of oxygen atoms would be 0.2 moles x 16 g/mol = 3.2 grams.
In one mole of sodium dichromate (Na2Cr2O7), there are 7 oxygen atoms. To find the number of moles in 7.00 g, you need to divide 7.00 g by the molar mass of Na2Cr2O7 to find the number of moles of Na2Cr2O7. Then, multiply the number of moles by 7 to find the number of oxygen atoms in 7.00 g of sodium dichromate.
There are 2 moles of oxygen atoms in 35.2 g of oxygen. This is calculated by first finding the molar mass of oxygen (16 g/mol), then using the formula: moles = mass / molar mass.
moles = mass/molar mass The molar mass of an oxygen atom = 16 g mol-1, as there are two oxygen atoms in diatomic oxygen this has to be doubled. 42g / 32g mol-1 = 1.3125 moles
To find the number of moles of atoms of oxygen in sulfuric acid (H2SO4), we need to calculate the molar mass of sulfuric acid. The molar mass of sulfuric acid is 98 g/mol. Oxygen constitutes 64 g/mol in sulfuric acid. Therefore, in 49 grams of sulfuric acid, there are 49/98 = 0.5 moles of sulfuric acid. Since each mole of sulfuric acid contains 4 moles of oxygen atoms, there are 0.5 moles x 4 = 2 moles of oxygen atoms in 49 grams of sulfuric acid.
.1146g of mass of Unknown and 12.00ml of NaOH. Find the moles of acidic H atoms
There are 6 moles of oxygen atoms in 2 moles of potassium dichromate (K2Cr2O7). Each mole of K2Cr2O7 contains 7 oxygen atoms, so 2 moles would contain 14 oxygen atoms. The molar mass of oxygen is 16 g/mol, so there would be 224 grams of oxygen in 2 moles of K2Cr2O7.
To find the number of oxygen atoms in 47.6 g of Al2(CO3)3, first calculate the molar mass of Al2(CO3)3, which is 233.99 g/mol. Then, divide the given mass by the molar mass to find the number of moles (0.2032 mol). Finally, use the chemical formula to determine that there are 0.6096 moles of oxygen atoms, which is 3.67 x 10^23 atoms.
1 mole of iron atoms has the greatest mass - 55,845 g.
85g of oxygen = 85/16 moles of O atoms = 5.3125 moles There are 2 moles of oxygen atoms per mole of carbon dioxide, so we have 2.65625 moles of carbon dioxide. This is 2.65625 x 44 g = 116.875 g.