Ah, isn't that a lovely question? To find the number of moles in 100 g of MgCO3, we first need to know the molar mass of magnesium carbonate (MgCO3). Then, we can use the formula: moles = mass / molar mass. Just like painting a happy little tree, it's all about following the steps and enjoying the journey to the answer.
The gram atomic mass of phosphorus is 30.9738, and by definition, a mole of such atoms contains Avogadro's Number of atoms. Therefore, 100 g of phosphorus contains 100/30.9738 or 3.23 moles, to the justified number of significant digits.
To find the number of moles of phosphorus atoms in 100 grams of P4S10, we first need to determine the molar mass of P4S10 which is 284.26 g/mol. Next, we calculate the number of moles of P4S10 in 100 grams by dividing 100 g by the molar mass to get 0.352 moles of P4S10. Since there are 4 phosphorus atoms in each P4S10 molecule, there are 0.352 moles x 4 = 1.41 moles of phosphorus atoms in 100 grams of P4S10.
To find the molarity, first calculate the number of moles of KCl using its formula weight. The formula weight of KCl is 74.55 g/mol. So, for 5.0 g of KCl, the number of moles is 5.0 g / 74.55 g/mol = 0.067 moles. Then, divide the moles by the volume of the solution in liters (100 mL = 0.1 L) to find the molarity: 0.067 moles / 0.1 L = 0.67 M.
To find the number of moles, you need to divide the mass of the substance by its molar mass. The molar mass of aluminum chloride (AlCl3) is 133.34 g/mol. So, for 32.5 g of aluminum chloride, the number of moles would be 32.5 g / 133.34 g/mol = 0.243 moles.
To find the number of moles in 74 g of KCl, you first need to calculate the molar mass of KCl. The molar mass of KCl is approximately 74.55 g/mol. Then, divide the given mass by the molar mass to get the number of moles: 74 g / 74.55 g/mol ≈ 0.993 moles.
The gram atomic mass of phosphorus is 30.9738, and by definition, a mole of such atoms contains Avogadro's Number of atoms. Therefore, 100 g of phosphorus contains 100/30.9738 or 3.23 moles, to the justified number of significant digits.
The atomic weight of magnesium is 24.31; therefore, the number of moles in 100 gm is 100/24.31 = 4.11, to the justified number of significant digits.
To calculate the number of moles of sodium borohydride in 100 mg, you need to know the molar mass of the compound, which is 37.83 g/mol. First, convert 100 mg to grams (0.1 g), then divide by the molar mass to get the number of moles, which is approximately 0.0026 moles.
100/150.158 is 0.666 moles
To find the number of moles of phosphorus atoms in 100 grams of P4S10, we first need to determine the molar mass of P4S10 which is 284.26 g/mol. Next, we calculate the number of moles of P4S10 in 100 grams by dividing 100 g by the molar mass to get 0.352 moles of P4S10. Since there are 4 phosphorus atoms in each P4S10 molecule, there are 0.352 moles x 4 = 1.41 moles of phosphorus atoms in 100 grams of P4S10.
To find the molarity, first calculate the number of moles of KCl using its formula weight. The formula weight of KCl is 74.55 g/mol. So, for 5.0 g of KCl, the number of moles is 5.0 g / 74.55 g/mol = 0.067 moles. Then, divide the moles by the volume of the solution in liters (100 mL = 0.1 L) to find the molarity: 0.067 moles / 0.1 L = 0.67 M.
the equation is Xg multiplied by the moles/grams of X = moles of X (the grams cancel leaving you with moles) 607g Ar x 1 mole/ 39.95g = 15.19 moles
1 mol = 118.94 1 mol / 118.94 = 1.70 / x G = 202.10g
The number of moles is mass in g/molar mass in g.
The formula is: number of moles = g Be/9,012.
The number of moles 9,92.10e-5.
0.0027 moles.