Isopropyl alcohol, CH3CHOHCH3, is used in rubbing alcohol mixtures. Alcohol on the skin cools by evaporation....
Isopropyl alcohol, CH3CHOHCH3, is used in rubbing alcohol mixtures. Alcohol on the skin cools by evaporation. How much heat is absorbed by the alcohol if 4.39 g evaporates? The heat of vaporization of isopropyl alcohol is 42.1 kJ/mol
Homework Answers
Answer
moles of isopropyl alcohol = mass/molar mass = 4.39/60.1=0.073 moles
Heat = moles*heat os vaporization of isopropyl alcohol
Heat = 0.073*42.1= 3.07 kJ
Add Answer to:
Isopropyl alcohol, CH3CHOHCH3, is used in rubbing alcohol
mixtures. Alcohol on the skin cools by evaporation....
Suppose that 1.13 g of rubbing alcohol (C3H8O) evaporates from a 66.0 g aluminum block.
Suppose that 1.13 g of rubbing alcohol (C3H8O) evaporates from a 66.0 g aluminum block.Part AIf the aluminum block is initially at 25℃, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25℃. The heat of vaporization of the alcohol at 25℃ is 45.4 kJ / mol, the specific heat of aluminum...
How much heat is needed to vaporize 225 g of rubbing alcohol C3H8O at its boiling...
How much heat is needed to vaporize 225 g of rubbing alcohol C3H8O at its boiling point? The enthalpy change of vaporization of rubbing alcohol = 0.664 kj/mol.
how to solve Problem 4 Suppose that 1.14 g of rubbing alcohol (C2H2O) evaporates from a...
how to
solve
Problem 4 Suppose that 1.14 g of rubbing alcohol (C2H2O) evaporates from a 67.0 g aluminum block. Part A You may want to reference (Pages 478 - 487) Section 11.5 while completing this problem. If the all Assume vaporize 0.903 J Express View A 4 of 17 Review | Constants 1 Periodic Table Part A If the aluminum block is initially at 25°C, what is the final temperature of the block after the evaporation of the alcohol?...
Suppose that 1.02 g of rubbing alcohol (C3H8O) evaporates from a 55.0-g aluminum block. If the...
Suppose that 1.02 g of rubbing alcohol (C3H8O) evaporates from a 55.0-g aluminum block. If the aluminum block is initially at 25 degree C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization ofthe alcohol K comes only from the aluminum block and that the alcohol vaporizes at 25 degree C.
0.55 g of isopropyl alcohol (C3H8O) evaporates from a 36.31 g aluminum block initially at 25.0...
0.55 g of isopropyl alcohol (C3H8O) evaporates from a 36.31 g aluminum block initially at 25.0 °C. Calculate the final temperature of the aluminum block. Assume 100% heat transfer. Isopropyl alcohol: at its boiling point ΔHvap = 39.9 kJ/mol; at 25 °C ΔHvap = 45.4 kJ/mol. Heat capacity of Al(s) = 0.903 J/(g °C). answer is 12.3, show work
Which of the following are exothermic (give off heat)? (a) Rubbing alcohol evaporates from the skin....
Which of the following are exothermic (give off heat)? (a) Rubbing alcohol evaporates from the skin. (b) Fog forms over the Napa Valley. (c) Ice cubes solidfy in the freezer. (d) Liquid nitrogen boils at 77 K (its boiling point
QUESTION 5 Denatured alcohol is the major component of rubbing alcohol used to clean skin before...
QUESTION 5 Denatured alcohol is the major component of rubbing alcohol used to clean skin before medical procedures. ethanol which has been rendered toxic or undrinkable, because its ingestability is affected. ethanol in which the carbon dioxide produced during fermentation is kept inside the beverage. a sweet-tasting, extremely poisonous alcohol used as automobile antifreezo.
Isopropyl alcohol has a normal boiling point of 82.5 Celcius. Its standard heat of vaporization is...
Isopropyl alcohol has a normal boiling point of 82.5 Celcius. Its standard heat of vaporization is 41.0 kJ/mol. Calculate its vapour pressure, in atmospheres, at 25.6 Celcius.
Evaporating sweat cools the body because evaporation is endothermic and absorbs 2.44 kJ per gram of...
Evaporating sweat cools the body because evaporation is endothermic and absorbs 2.44 kJ per gram of water evaporated. Estimate the mass of water that must evaporate from the skin to cool a body by 0.40 ∘C, if the mass of the body is 99 kg and its heat capacity is 4.0 J/g∘C. (Assume that the heat transfer is 100 % efficient.)
354/assignments/394309/submissions/new Q4 Le Chatelier's Principle 18 Points In the gas phase at 400°C, isopropyl alcohol (rubbing...
354/assignments/394309/submissions/new Q4 Le Chatelier's Principle 18 Points In the gas phase at 400°C, isopropyl alcohol (rubbing alcohol) decomposes to acetone. (CH3)2CHOH(g) = (CH3)2CO(g) + H2(g) AH° = +57.3 kJ Isopropyl alcohol acetone Does the amount of acetone increase, decrease, or remain the same when equilibrium mixture of reactants and products are subjected to the following changes? EXPLAIN your answer using rates or Q Q4.1 Temperature effects 6 Points The temperature is increased. Increase O Decrease Remain the same Enter your...
how to
solve
Problem 4 Suppose that 1.14 g of rubbing alcohol (C2H2O) evaporates from a 67.0 g aluminum block. Part A You may want to reference (Pages 478 - 487) Section 11.5 while completing this problem. If the all Assume vaporize 0.903 J Express View A 4 of 17 Review | Constants 1 Periodic Table Part A If the aluminum block is initially at 25°C, what is the final temperature of the block after the evaporation of the alcohol?...
Suppose that 1.02 g of rubbing alcohol (C3H8O) evaporates from a 55.0-g aluminum block. If the aluminum block is initially at 25 degree C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization ofthe alcohol K comes only from the aluminum block and that the alcohol vaporizes at 25 degree C.
QUESTION 5 Denatured alcohol is the major component of rubbing alcohol used to clean skin before medical procedures. ethanol which has been rendered toxic or undrinkable, because its ingestability is affected. ethanol in which the carbon dioxide produced during fermentation is kept inside the beverage. a sweet-tasting, extremely poisonous alcohol used as automobile antifreezo.
354/assignments/394309/submissions/new Q4 Le Chatelier's Principle 18 Points In the gas phase at 400°C, isopropyl alcohol (rubbing alcohol) decomposes to acetone. (CH3)2CHOH(g) = (CH3)2CO(g) + H2(g) AH° = +57.3 kJ Isopropyl alcohol acetone Does the amount of acetone increase, decrease, or remain the same when equilibrium mixture of reactants and products are subjected to the following changes? EXPLAIN your answer using rates or Q Q4.1 Temperature effects 6 Points The temperature is increased. Increase O Decrease Remain the same Enter your...
Most questions answered within 3 hours.
-
The average length of time between arrivals at a turnpike
toll-booth is 26 seconds. What is...
asked 55 minutes ago -
(a) A piston at 6.1 atm contains a gas that occupies a volume of
3.5 L....
asked 2 hours ago -
Please answer true or false. Words
cannot be changed or added in to make it true...
asked 2 hours ago -
An empty test tube weighs 15.923 grams. Then,
MgCl2•6H2O is added into the test tube. After...
asked 2 hours ago -
Assume memory access is 10 units of time and disk access is
10000 units of time....
asked 2 hours ago -
1. Are all good samples random?
2. Magazines often report surveys giving statistics such as “63%...
asked 2 hours ago -
Under all the various types of market structures, firms
must eventually earn some economic profits for...
asked 2 hours ago -
Consider the following fitness regime for a single locus trait
with two co-dominant alleles: w11 =...
asked 2 hours ago -
A large cable company reports the following.
80% of its customers subscribe to its cable TV...
asked 2 hours ago -
Please answer the question in brief.
Discuss the role of ERP in organizations. Are ERP tools...
asked 2 hours ago -
Discuss the pros and cons of collaborative software such
as SameTime. Does it increase productivity? What...
asked 2 hours ago -
Buying your in-laws a gift because it’s expected is
due to the ____________ motive of gift-giving....
asked 2 hours ago