How to Calculate Between Btu/lbmol-R and kJ/kmol-K

The Btu/lbmol-R to kJ/kmol-K and kJ/kmol-K to Btu/lbmol-R Calculator converts between British Thermal Units per pound-mole per Rankine (Btu/lbmol-R) and kilojoules per kilomole per Kelvin (kJ/kmol-K) for molar specific heat or gas constants in imperial and SI units. The formulas are:

Where:

• \( Btu/lbmol \cdot R \): British Thermal Units per pound-mole per Rankine, an imperial unit of molar specific heat.
• \( kJ/kmol \cdot K \): Kilojoules per kilomole per Kelvin, a SI unit of molar specific heat.

Select the conversion direction, enter the input value, and calculate the result.

Using the Btu/lbmol-R and kJ/kmol-K Mutual Conversion Calculator

This calculator is useful for thermodynamics, chemical engineering, or gas properties analysis, such as converting molar heat capacities or universal gas constants, supporting bidirectional conversions.

Select the direction (Btu/lbmol-R to kJ/kmol-K or kJ/kmol-K to Btu/lbmol-R), input the value. The calculator outputs the converted value.

Example 1: For a molar specific heat of 1 Btu/lbmol-R to kJ/kmol-K.

1. Direction: Btu/lbmol-R to kJ/kmol-K
2. Input: \( 1 \)
3. Calculation: \( kJ/kmol \cdot K = 1 \times 4.1868 = 4.1868 \)
4. Result: \( 4.1868 \, \text{kJ/kmol-K} \)

Example 2: For a value of 4.1868 kJ/kmol-K to Btu/lbmol-R.

1. Direction: kJ/kmol-K to Btu/lbmol-R
2. Input: \( 4.1868 \)
3. Calculation: \( Btu/lbmol \cdot R = 4.1868 / 4.1868 = 1.0000 \)
4. Result: \( 1.0000 \, \text{Btu/lbmol-R} \)

Use this tool for quick bidirectional conversions in engineering analysis.

Common FAQ

Below are frequently asked questions about Btu/lbmol-R and kJ/kmol-K conversions:

• Q: What is Btu/lbmol-R?
  A: Btu/lbmol-R stands for British Thermal Units per pound-mole per Rankine, an imperial unit of molar specific heat capacity.
• Q: What is kJ/kmol-K?
  A: kJ/kmol-K stands for kilojoules per kilomole per Kelvin, a SI unit of molar specific heat capacity.
• Q: Is the conversion always 1 Btu/lbmol-R = 4.1868 kJ/kmol-K?
  A: Yes, based on standard unit conversions where 1 Btu/lbmol-R = 4.1868 kJ/kmol-K.
• Q: How accurate is this calculator?
  A: It provides precise results based on the formulas, rounded to 4 decimal places.
• Q: Can negative values be used?
  A: No, input values must be positive; invalid inputs leave the result blank.