Density Formula:
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This calculator converts molecular weight (g/mol) to density (g/cm³) using the ideal gas law equation. It's particularly useful in chemistry and physics for determining gas density under specific conditions.
The calculator uses the density formula derived from the ideal gas law:
Where:
Explanation: The formula calculates the density of an ideal gas by relating its molecular weight, pressure, and temperature through the gas constant.
Details: Accurate density calculation is essential for various scientific applications, including material characterization, gas behavior analysis, and industrial process design.
Tips: Enter molecular weight in g/mol, pressure in atm, and temperature in Kelvin. All values must be positive numbers.
Q1: What is the ideal gas law constant R?
A: The gas constant R is 0.0821 L·atm/mol·K when using pressure in atm and volume in liters.
Q2: Can this calculator be used for real gases?
A: This calculator uses the ideal gas law, which provides accurate results for ideal gases under normal conditions. For real gases, additional corrections may be needed.
Q3: Why is temperature required in Kelvin?
A: The Kelvin scale is an absolute temperature scale required for gas law calculations to ensure proper proportionality.
Q4: What are typical density values for gases?
A: Gas densities are typically much lower than liquids, ranging from about 0.0001 to 0.01 g/cm³ under standard conditions.
Q5: Can this calculator handle different units?
A: This calculator is specifically designed for g/mol to g/cm³ conversion using atm and K. For other units, appropriate conversions must be applied first.