What are the units of the unknown quantity for the following problem? Calculate the molar volume of oxygen gas given an STP density of 1.43 g/1.00 L.

Question

Quizplus · Accepted Answer

The molar volume of oxygen gas is equal to the volume occupied by one mole of oxygen gas at STP. Since STP is defined as a temperature of 273.15 K and a pressure of 1 atm, the molar volume can be calculated using the ideal gas law:

PV = nRT

Where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature. At STP, we know that P = 1 atm, T = 273.15 K, and n = 1 mole. Rearranging the ideal gas law to solve for V, we get:

V = nRT/P

Substituting the values for STP, we get:

V = (1 mole) x (0.08206 L·atm/mol·K) x (273.15 K) / (1 atm)

Solving this equation gives us:

V = 22.41 L/mol

Therefore, the units of the unknown quantity are L/mol, which is choice C.

What Are the Units of the Unknown Quantity for the Following