Homework: Name: 1. At the top of Mount Everest, water boils at 70 °C. Explain why...
Homework: Name: 1. At the top of Mount Everest, water boils at 70 °C. Explain why this is lower than its usual boiling point of 100°C. 2. a) How much heat is needed to heat 33.9 g of acetone (C3H.O) from 25.0°C to its boiling point of 56.05°C? (Specific heat of acetone is 2.15 J/g.C) b) How much heat is required to vaporize 33.9 g of acetone at its boiling point? (AHvap for acetone is 29.1 kJ/mole) 3. How much...
Nume. _ 1. At the top of Mount Everest, water boils at 70 °C. Explain why this is lower than its usual boiling point of 100°C. 2. a) How much heat is needed to heat 33.9 g of acetone (C.H.O) from 25.0°C to its boiling point of 56.05°C? (Specific heat of acetone is 2.15 J/g.c) b) How much heat is required to vaporize 33.9 g of acetone at its boiling point? (AHvap for acetone is 29.1 kJ/mole) 3. How much...
Homework: Name: 1. At the top of Mount Everest, water boils at 70 °C. Explain why this is lower than its usual boiling point of 100°C. 2. a) How much heat is needed to heat 33.9 g of acetone (C3H&0) from 25.0°C to its boiling point of 56.05°C? (Specific heat of acetone is 2.15 J/g.C) b) How much heat is required to vaporize 33.9 g of acetone at its boiling point? (AHvap for acetone is 29.1 kJ/mole) 3. How much...
Which of the following statements is FALSE? O When a substance melts, some - but not all-of the intermolecular forces are disrupted O When a substance evaporates, all of the intermolecular forces are disrupted O A compound with stronger intermolecular forces will have a higher boiling point The enthalpy of sublimation is less than the enthalpy of vaporization but more than the enthalpy of fusion O The enthalpy of vaporization for a compound is greater than the enthalpy of fusion...
a. How much heat (kJ), at 1 atm, is required to raise the temperature of 25.0 g of liquid ethanol from -5.0°C to its boiling temperature and then vaporize all of it? Cs, liquid= 2.46J/g°C AHvap=38.6 kJ/mol b. How much heat (kJ), at 1 atm, is required to raise the temperature of 25.0 g water from 5.0°C to its boiling temperature and then vaporize all of it? Cs, liquid=4.184 /g°C AHvap=40.7 kJ/mol
Question 16 Incomplete answer Marked out of 11.00 P Flag question Acetone (C3HO) has a boiling point of 56.1°C and a melting point of -95°C. The specific heat of acetone is 1.653 J/g Kin the solid phase, 2.144 J/gK in the liquid phase, and 1.343 J/gK in the gas phase. Its heat of fusion is 5.70 kJ/mole while its heat of vaporization is 31.0 kJ/mol. Use this information to answer the questions below. Report numerical answers with the correct SF...
QUESTION 3 How much heat (in kJ) is required to raise the temperature of 122 g of ethanol (mw 46.07) from 11.29 °C to its boiling point of 78.37 °C and then vaporize it completely creating ethanol gas at the boiling temperature? (specific heat - 2.46 J/g°C, AHyap = 48.6 kJ/mol) QUESTION 4 What is the change in enthalpy (in kJ) when 40.1 g of ethanol (mw-46.07) is condensed at its boiling temperature? (specific heat 2.46 J/g°C, AHvap 48.6 kJ/mol)...
Given the following information for ethanol, C,H,OH (at 1 atm), calculate the amount of heat in kneeded (at 1 atm) to vaporize a 20.6-g sample of liquid ethanol at its normal boiling point of 78.4 °C. boiling point = 78.4 °C AHvap 78.4 °C) = 38.6 kJ/mol melting point = -115°C AH(-115 °C) -5.02 kJ/mol specific heat liquid = 2.46 J/gºC
The following information is given for mercury at 1 atm: boiling point-357°C AHvap 0.296 kJ/g melting point--39 °C AHfus 11.6 J/g Heat is added to a sample of solid mercury at its normal melting point of -39 °C. How many grams of mercury will melt if 12.3 kJ of energy are added?
Only do question 4-6 show all work CHM 107, Quiz 1 Name How much energy must be removed from a 125 g sample of benzene (CH6 vapor at 425.0 K to make it a solid at 200.0 K? Use the following steps to get to your answer. You MUST show your work to receive any credit. The following physical data for benzene may be useful. See announcement for due date. AHvap 33.9 kJ/mol Cliq 1.73 J/g C Cgas 1.06 Csol...