Ethanol (C2H5OH) melts at -114°C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/gK and 2.3 J/gK, respectively. How much heat (kJ) is needed to convert 25.0 g of solid ethanol at -135°C to liquid ethanol at -60°C?
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List the compounds in order of decreasing boiling point….
List the compounds in order of decreasing boiling point. CH3CH2CH3 He CH3CHO
Which of the following compounds is least soluble in octane…
Which of the following compounds is least soluble in octane (CH3CH2CH2CH2CH2CH2CH2CH3)?
Place the following substances in order of increasing vapor…
Place the following substances in order of increasing vapor pressure at a given temperature. NF3 NH3 BCl3
What mass (in g) of NH3 must be dissolved in 475 g of methan…
What mass (in g) of NH3 must be dissolved in 475 g of methanol to make a 0.147 m solution?
How much energy must be removed from a 125 g sample of benze…
How much energy must be removed from a 125 g sample of benzene (molar mass = 78.11 g/mol) at to liquify the sample and lower the temperature to 335.0 K? The following physical data may be useful.ΔHvap = 33.9 kJ/molΔHfus = 9.8 kJ/molCliq = 1.73 J/g°CCgas = 1.06 J/g°CCsol = 1.51 J/g°CTmelting = 279.0 KTboiling = 353.0 K
Identify the element that is the best insulator.
Identify the element that is the best insulator.
Identify the compound with the lowest dipole moment.
Identify the compound with the lowest dipole moment.
Identify the element with the largest atomic radius.
Identify the element with the largest atomic radius.
A hair floating on the top of water is an example of
A hair floating on the top of water is an example of