3. Suppose that 1.15 g of rubbing alcohol (C3H8O) evaporates from a 65.0 g aluminum block. If the aluminum block is initially at 25 °C, what is final temperature of the block after the evaporation of the alcohol? Assumes that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25 °C. (^Hvap alcohol is 45.4 kJ/mol and specific heat capacity of Al is 0.900 J/g°C)

Q: Energy Constants for H2O 334 J/g = Heat of Fusion (Hf) 2260 J/g = Heat of Vaporization (Hv) 2.11…

A: Heat absorbed by the sample is calculated as follows: Heat = Heat required to convert ice to water…

Q: a) What is the heat of vaporization of carbon tetrachloride, in kJ?

A:

Q: 3. Water has a vapor pressure of 17.5 torr at 20 °C, at what temperature does water have a vapor…

A:

Q: How much energy must be removed from a 94.4 g sample of benzene (molar mass= 78.11 g/mol) at 322.0 k…

A:

Q: (a) If 83.0 g of ice at 0.0oC is placed in 235mL of water at 28.0oC, find the final temperature of…

A:

Q: 15. Calorimetry a. How much heat needs to be taken from 0.5 kg of ethyl alcohol as a gas at its…

A: Q = mc∆T   Q = heat energy (Joules, J), m = mass of a substance (g)   c = specific heat (units…

Q: Given that a 10.0 g sample of ice at 0.0 °C melts and then the resultant water proceeds to warm to…

A:

Q: Refer to this data table: Specific heat of: Molar heat of fusion of ice 6.01 kJ/mol. ice 2.03 J/g…

A: Given, Specific heat of Ice = 2.03 J/g°C Steam = 1.99 J/g°C Water = 4.184 J/g°C Molar heat of fusion…

Q: The specific heat of ice is 2.10 kJ/kg °C, the heat of fusion for ice at 0°C is 333.7 kJ/kg, the…

A: Heat loss by steam should be equal to heat gain by ice.  Heat change in same phase=ms∆T Heat change…

Q: How much energy (heat) is required to convert 33.5 g of H2O(l) at 8.7°C to H2O(g) at 129.3°C?…

A: Mass of water (liquid)  = 33.5 gMoles of H2O =  = 1.86 molInitial temperature (T1) = 8.7 °CFinal…

Q: Suppose that 1.15 g of rubbing alcohol (C3H8O) evaporates from a 65.0-g aluminum block. If the…

A: The given data contains, mass of block = 65.0 g. Temperature ( initial ) = 25°C

Q: Based on the thermodynamic properties provided for water, determine the energy change when the…

A: Mass of water = 0.350 kg = 350 g Molar mass of water = 18 g/mol Moles of water = 350 g / 18 g/mol =…

Q: What amount of heat (in kJ) is required to convert 13.3 g of an unknown liquid (MM = 83.21 g/mol) at…

A:

Q: Determine the normal boiling point of a liquid with vapor pressure 63.8 mmHg at 36.50°C, given that…

A: Accoding to Clausius Clapeyron equation,At normal boling point, the vapor pressure equal= 760 mmHg

Q: Dry ice sublimes into carbon dioxide at -78.5 °C. What is true about the heat of the system (qsys)…

A: Sublimation is change of state  from solid to gas without changing to liquid state.

Q: Two 20.0 g ice cubes at -20.0 °C are placed into 215 g of water at 25.0 °C. Assuming no energy is…

A:

Q: The vapor pressure of water is 22.8 atm at 155.2 K, and the vapor pressure of water is 88.5 atm at…

A: Step 1: Step 2: Step 3: Step 4:

Q: Determine the normal boiling point of a liquid with vapor pressure 63.8 mmHg at 56.50°C, given that…

A: Given: P1= 1 atm= 760 mm Hg P2= 63.8 mm Hg T2= 56.50°C= 56.50+273.15 K= 329.65 K ∆Hvap=43.5 kJ/mol…

Q: A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 279.0 Torr at 45.0 °C. Calculate…

A: Given : We have to calculate delta H vaporization and normal boiling point.

Q: H2O has a ΔHvap = 40.8 kJ/mol and a ΔHfus = 6.02 kJ/mol. The specific heat capacity of ice is 2.11…

A: The amount of heat absorbed to elevate the temperature of ice (Q1) at -42oC to 0oC is equal to…

Q: Suppose that 1.10 g of rubbing alcohol (C3H8O) evaporates from a 67.0 g aluminum block. If the…

A: Mass of alcohol = 1.10g Moles of alcohol = 1.10g/60g/mol= 0.0183 mol Heat of vaporisation =…

Q: Consider the following selected properties of water: 1.00 g/mL Density (liquid water): d = Heat of…

A: As we needed the amount of heat that is required to vaporize 54 mL of water, we only need the data…

Q: What amount of heat (in kJ) is required to convert 14.9 g of an unknown solid (MM = 83.21 g/mol) at…

A: Answer:It is a 3 step process:Heating of solid up to its melting pointMelting of solid into…

Q: the vapor pressure of water at 25 C is 3.13 x 10^-2 atm, and the heat of vaporization of water is 25…

A:

Q: What amount of heat (in kJ) is required to convert 19.1 g of an unknown solid (MM = 83.21 g/mol) at…

A: We have to calculate the amount of heat needed.

Q: 22. The molar enthalpy of vaporization of an organic compound is 2kJ/mol, and its normal boiling…

A: The molar enthalpy of vaporization of an organic compound is, ∆Hv=2kJ/mol∆Hv=2000 J/mol The normal…

Q: How much heat is released ( in J) when 54.0 g of water at 10.0 °C is cooled to form ice at - 10.0…

A: Given the mass of water, m = 54.0 g  The initial state is water at 10.0 oC.  The final state is ice…

Q: A 21.3-g sample of ice at -14.6°C is mixed with 118.4 g of water at 80.0°C. Calculate the final…

A: Given: m1=mass of ice=21.3 gm2=mass of water=118.4 gT1=initial temperature=-14.6oCT2=final…

Q: A sample of C.H.Br, has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

A: GivenA sample of , has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

Q: A chemical, C2H5OH (l), is used to disinfect the skin prior to an injection. If a 2.00 g sample of…

A: Given,  The mass of ethanol ( C2H5OH) = 2.00 g.  The molar enthalpy of vaporization of ethanol =…

Q: A substance has a molar mass of 82.95 g/mol. A 33.5g sample of this substance absorbs 5.114 kJ when…

A: Molar heat of fusion :- The amount of heat absorbed when one mole of a substance changes from solid…

Q: Calculate the amount of heat required to heat 25.0 g of water at 80.0°C to obtain steam at 100 °C.…

A: There are two processes involved here: 1. Heating water from 80°C to 100°C 2. Phase transition of…

Q: Suppose 1.0 x 102 grams of ice absorbs 1255 J of heat, reaching a final temperature of -2.0°C.  What…

A:

Q: A sample of C₂H₂Br₂ has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

A: Answer: It is a 3 step process: 1. Heating of liquid C3H4Br2 up to its boiling point 2. Vaporization…

Q: Calculate the total amount of heat needed to convert 22.50 g of solid carbon tetrachloride, CC14, at…

A:

Q: Two 20.0‑g ice cubes at −20.0 ∘C are placed into285 g of water at 25.0 ∘C. Assuming no heat is…

A: Given information: Mass of ice = 20.0 g Mass of water = 285 g Initial temperature = -20 ℃ Final…

Q: The vapor pressure of water is 41.1 atm at 274.1 K, and the vapor pressure of water is 71.4 atm at…

A: Given data is as follows: The vapor pressure P1 of water at temperature , T1 = 274.1K = 41.1 atm The…

Q: A 25.0-g sample of ice at 0.0°C is added to 125 g of water, initially at 35.0°C. What is the final…

A: q1+q2=−q3.... (1), where q1 - the heat absorbed by the solid at  0∘C q2 - the heat absorbed by the…

Q: 14. Calculate the amount of heat (in kJ) released when 35.0 g of benzene vapor is cooled from 96.0…

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.