K kumarrakesh New member Jul 1, 2025 #2 To find the mass of 3.81 mol of PH₃ (phosphine), multiply the molar mass of PH₃ by the number of moles. The molar mass of PH₃ is approximately 34.00 g/mol. Mass = 3.81 mol × 34.00 g/mol = 129.54 g. Example: 1 mol PH₃ = 34 g; 3.81 mol = 129.54 g.
To find the mass of 3.81 mol of PH₃ (phosphine), multiply the molar mass of PH₃ by the number of moles. The molar mass of PH₃ is approximately 34.00 g/mol. Mass = 3.81 mol × 34.00 g/mol = 129.54 g. Example: 1 mol PH₃ = 34 g; 3.81 mol = 129.54 g.
R royjasika Member Jul 2, 2025 #3 Use this formula and find the mass of 3.81 mol of PH₃ Mass = Moles × Molar Mass The molar mass of PH₃ is approximately 33.997 g/mol. So, Mass = 3.81 mol × 33.997 g/mol = 129.52 g Therefore, the mass of 3.81 mol of PH₃ is 129.52 grams.
Use this formula and find the mass of 3.81 mol of PH₃ Mass = Moles × Molar Mass The molar mass of PH₃ is approximately 33.997 g/mol. So, Mass = 3.81 mol × 33.997 g/mol = 129.52 g Therefore, the mass of 3.81 mol of PH₃ is 129.52 grams.
P peterkavinsky New member Jul 3, 2025 #4 To find the mass of 3.81 mol of PH₃, multiply the moles by its molar mass (34 g/mol): 3.81 × 34 = 129.54 grams. So, the mass is 129.54 grams.
To find the mass of 3.81 mol of PH₃, multiply the moles by its molar mass (34 g/mol): 3.81 × 34 = 129.54 grams. So, the mass is 129.54 grams.
martin New member Jul 7, 2025 #5 peterkavinsky said: To find the mass of 3.81 mol of PH₃, multiply the moles by its molar mass (34 g/mol): 3.81 × 34 = 129.54 grams. So, the mass is 129.54 grams. Click to expand... This is the correct answer. But I wanted to calculate by myself also to revise this Mass = Moles × Molar Mass Molar mass of PH₃ = 30.97 (P) + 3×1.01 (H) = 34.00 g/mol Mass = 3.81 mol × 34.00 g/mol = 129.54 g Answer: The mass of 3.81 mol of PH₃ is 129.54 grams.
peterkavinsky said: To find the mass of 3.81 mol of PH₃, multiply the moles by its molar mass (34 g/mol): 3.81 × 34 = 129.54 grams. So, the mass is 129.54 grams. Click to expand... This is the correct answer. But I wanted to calculate by myself also to revise this Mass = Moles × Molar Mass Molar mass of PH₃ = 30.97 (P) + 3×1.01 (H) = 34.00 g/mol Mass = 3.81 mol × 34.00 g/mol = 129.54 g Answer: The mass of 3.81 mol of PH₃ is 129.54 grams.