Input interpretation
2 kg of isopentane
Basic properties for 2 kg
mass | 2 kg (kilograms) 4.41 lb (pounds) 4 pounds 6.5 ounces 2000 grams molar amount | 27.7 mol (moles) volume | 3.23 L (liters) 0.00323 m^3 (cubic meters) 3230 cm^3 (cubic centimeters) 6.82 pints 3.41 quarts 0.852 gallons 0.114 ft^3 (cubic feet) 197 in^3 (cubic inches) (at STP)
Corresponding quantities
sphere radius | 9.166 cm (centimeters) side of a cube | 0.1478 meters
Thermodynamic properties for 2 kg
heat capacity C_p | liquid | 4568 J/K heat of formation Δ_fH° | gaseous | -4258 kJ latent heat of vaporization | 723 kJ (kilojoules) | latent heat of fusion | 143 kJ (kilojoules) |
Units
Energy vs. temperature for 2 kg
(relative to STP)
Units
Phase change energies for 2 kg from 25 °C
energy required to heat to boiling point | 22.8 kJ (kilojoules) energy required to convert to vapor | 723 kJ (kilojoules) energy required to heat to boiling point and convert to vapor | 746 kJ (kilojoules) energy released from cooling to freezing point | 845 kJ (kilojoules) energy released from converting to solid | 143 kJ (kilojoules) energy released from cooling to freezing point and converting to solid | 988 kJ (kilojoules)
Mass composition for 2 kg
C (carbon) | 1.665 kg (83.2%) H (hydrogen) | 0.335 kg (16.8%)
Mass composition for 2 kg
Lewis structure
Draw the Lewis structure of isopentane. Start by drawing the overall structure of the molecule: Count the total valence electrons of the carbon (n_C, val = 4) and hydrogen (n_H, val = 1) atoms: 5 n_C, val + 12 n_H, val = 32 Calculate the number of electrons needed to completely fill the valence shells for carbon (n_C, full = 8) and hydrogen (n_H, full = 2): 5 n_C, full + 12 n_H, full = 64 Subtracting these two numbers shows that 64 - 32 = 32 bonding electrons are needed. Each bond has two electrons, so the above diagram has all the necessary bonds. There are 16 bonds and hence 32 bonding electrons in the diagram. Lastly, fill in the remaining unbonded electrons on each atom. In total, there remain 32 - 32 = 0 electrons left to draw and the diagram is complete: Answer: | |
Chemical names and formulas
formula | CH_3CH_2CH(CH_3)_2 Hill formula | C_5H_12 name | isopentane IUPAC name | isopentane
Substance properties
molar mass | 72.15 g/mol phase | liquid (at STP) melting point | -160 °C boiling point | 30 °C density | 0.62 g/cm^3 solubility in water | insoluble surface tension | 0.01372 N/m dynamic viscosity | 2.164×10^-4 Pa s (at 25 °C)
Units
