40*0.561=22.44g
The molar mass of potassium (K) is approximately 39.10 g/mol. To find the mass of 0.41 mol of potassium, you would multiply the molar mass by the number of moles: 39.10 g/mol * 0.41 mol = 16.049 g. So, the mass of 0.41 mol of potassium is approximately 16.049 grams.
The standard of atomic weight 39.0983 +/- 0.0001 u
Since potassium chloride has the formula KCl and the mass of the lost electron from neutral potassium is negligible compared with the mass of the protons and neutrons in the potassium atom nucleus, the molecular mass of potassium in this compound is the same as the atomic mass of potassium, 39.098.
The number 39.098 on the periodic table for Potassium represents the atomic mass of Potassium. It is the average mass of an atom of Potassium, calculated by adding the number of protons and neutrons in the nucleus.
To find the percent composition of potassium chlorate (KClO3), you first need to calculate the molar mass of the compound. The molar mass is approximately 122.55 g/mol for potassium (K), 35.45 g/mol for chlorine (Cl), and 48.00 g/mol for three oxygen atoms (O). This gives a total molar mass of about 122.55 + 35.45 + 48.00 = 206.00 g/mol. The percent composition of each element is then calculated by dividing the mass of each element by the total molar mass and multiplying by 100: K (59.50%), Cl (17.20%), and O (23.30%).
0,806 mol of the element potassium (K) is equal to 31,51 g.
The molar mass of the element potassium is 39 g/mol.
The molar mass of potassium (K) is approximately 39.10 g/mol. To find the mass of 0.41 mol of potassium, you would multiply the molar mass by the number of moles: 39.10 g/mol * 0.41 mol = 16.049 g. So, the mass of 0.41 mol of potassium is approximately 16.049 grams.
To find the mass of 0.375 moles of potassium (K), you need to multiply the moles by the molar mass of potassium (39.10 g/mol). 0.375 mol * 39.10 g/mol = 14.6625 g of potassium.
To find the mass of 1.474 mol of potassium sulfide, you need to multiply the number of moles by the molar mass of potassium sulfide. The molar mass of potassium sulfide (K2S) is approximately 110.26 g/mol. Therefore, the mass of 1.474 mol of potassium sulfide is about 162.62 grams.
The relative formula mass of potassium carbonate (K2CO3) is 138.21 g/mol. This value is calculated by adding the atomic masses of each element in the compound: potassium (K) has a molar mass of 39.10 g/mol, carbon (C) has a molar mass of 12.01 g/mol, and oxygen (O) has a molar mass of 16.00 g/mol.
To calculate the mass of 7.111 mol of potassium sulfide (K2S), you need to multiply the number of moles (7.111 mol) by the molar mass of K2S (which is 110.26 g/mol). Therefore, the mass of 7.111 mol of potassium sulfide is 783.83 grams.
To find the mass of 1.48 mol of potassium sulfide (K2S), you need to multiply the molar mass of K2S by the number of moles given. The molar mass of K2S is approximately 110.3 g/mol. Therefore, the mass of 1.48 mol of potassium sulfide would be 1.48 mol * 110.3 g/mol = 163.2 grams.
The standard of atomic weight 39.0983 +/- 0.0001 u
Since potassium chloride has the formula KCl and the mass of the lost electron from neutral potassium is negligible compared with the mass of the protons and neutrons in the potassium atom nucleus, the molecular mass of potassium in this compound is the same as the atomic mass of potassium, 39.098.
To find the grams of potassium in K2CrO7, first determine its molar mass. Potassium (K) has a molar mass of 39.10 g/mol, and K2CrO7 has two potassium atoms, so (39.10 g/mol) * 2 = 78.20 g/mol. Then, divide the mass of K2CrO7 by its molar mass to get the grams of potassium: (27.8 g) / (294.19 g/mol) ≈ 9.45 g of potassium.
You can calculate the molar mass of potassium chloride (KCl) by adding the atomic masses of potassium (K = 39.10 g/mol) and chlorine (Cl = 35.45 g/mol). The molar mass of KCl is 74.55 g/mol. To find the mass of 2.60 mol of KCl, multiply the molar mass by the number of moles: 2.60 mol * 74.55 g/mol = 193.53 grams.