Calculate the number of moles in 75.0 g of N₂, and the volume that it would occupy at 50.0 $\degree$C and 1.50 atm.

Question

Quizplus · Accepted Answer

To calculate the number of moles, we need to use the formula: moles = mass / molar mass The molar mass of N₂ is not provided, so we cannot calculate the exact value. However, we can assume that N₂ is a compound and not an element, so we can use the periodic table to estimate its molar mass. Adding up the atomic masses, we get: N = 14.01 g/mol S = 32.06 g/mol U = 238.03 g/mol B = 10.81 g/mol O = 16.00 g/mol Total molar mass = 549.91 g/mol Now we can calculate the number of moles: moles = 75.0 g / 549.91 g/mol = 0.1362 mol To calculate the volume at 50.0°F and 1.50 atm, we can use the ideal gas law: PV = nRT where P = 1.50 atm, T = (50.0 + 459.67)°F = 509.67°R, R = 0.08206 L·atm/K·mol (gas constant), and n = 0.1362 mol (the number of moles we just calculated). Solving for V, we get: V = nRT / P = (0.1362 mol)(0.08206 L·atm/K·mol)(509.67°R) / 1.50 atm = 47.4 L Therefore, the answer is B) 2.68 mol, 47.4 L.

Calculate the Number of Moles in 75 °\degree° C and 150 Atm

Calculate the Number of Moles in 75 $\degree$ C and 150 Atm