What Is the Molar Mass of an Unknown Gas If

question 21

Multiple Choice

What is the molar mass of an unknown gas if 3.7 g of the gas occupies 450 mL at 20.0°C and 2.0 atm? The value of R = 0.0821 L atm mol^-1 K^-1.

• A) 3.7 × 10^-2 g/mol
• B) 9.9 × 10^-3 g/mol
• C) 6.8 g/mol
• D) 98.9 g/mol
• E) 5.5 × 10³ g/mol

Examine the effect of global trends on forest cover and the environmental conservation efforts.

Understand the factors making it easier to prevent deforestation than fishery collapse.

Identify examples of fisheries and understand what constitutes a fishery.

Comprehend the operation and impact of Total Allowable Catch (TAC) systems in fisheries management.

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Definitions:

Variable Costing

A costing method that includes only variable manufacturing costs—direct materials, direct labor, and variable manufacturing overhead—in unit product costs.

Super-Variable Costing

A costing method that classifies all direct labor and manufacturing overhead costs as fixed period costs and only direct materials as a variable product cost.

Variable Costing

An accounting method that only assigns variable costs to inventory, treating fixed costs as period expenses.

Manufacturing Overhead Costs

Indirect costs associated with manufacturing, which are not directly attributable to specific units produced, such as maintenance, utilities, and salaries of indirect labor.