What Is the Molar Mass of an Unknown Gas If

question 16

Multiple Choice

What is the molar mass of an unknown gas if a sample weighing 0.389 g is collected in a flask with a volume of 102 cm³ at 97°C and at a pressure of 728 mmHg? (R = 0.08206 L • atm/K • mol, 1 atm = 760 mmHg) .

• A) 187 g/mol
• B) 121 g/mol
• C) 112 g/mol
• D) 31.6 g/mol
• E) 8.28 × 10^-3 g/mol

Understand the techniques and materials used in Roman art to achieve certain aesthetic effects.

Describe structural innovations and their purposes in Roman architecture.

Differentiate between components and stylistic features of Roman wall painting and sculpture.

Know the key figures, including emperors and deities, depicted in Roman art and their significance.

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