The heat of vaporization of a liquid is 1344 J/g. What is the minimum number of joules needed to change 40.0 g of the liquid to vapor at the boiling point? 53760 J O 0.5376 J 500 J 0.5376 KJ

Q: How much heat (in J) is required to warm 1.97 grams of substance G (specific heat capacity 0.850…

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Q: Calculate the heat released, in Joules, when cooling a 350.0 g of aluminum bar from 70.0 degrees to…

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Q: heat of fusion of pure silicon is 43.4 kJ/mol. How much energy in kJ would be needed to melt a…

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Q: The heat capacity of liquid ethanol is 2.45 J/g-deg C. How much heat do you need to add to 100 g of…

A: Given: Specific heat capacity of ethanol = 2.45 J/g⋅ oC Mass of ethanol = 100.0 g Initial…

Q: Specific heat solid The following information is given for silver at 1 atm: T Tm = 2212.00°C =…

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Q: Which of the following is a decomposition reaction? Which of the following is a decomposition…

A: A decomposition reaction is a reaction in which a compound breaks down into two or more simpler…

Q: The specific heat of ice is 2.06 J/g°C.  Calculate how much energy is needed to heat a 52.0 gram…

A: The amount of heat energy required to raise the temperature of a substance can be calculated using…

Q: How much heat was absorbed (in J) if a 47.8 g sample of an alloy with a specific heat of 0.504 J/g…

A: Mass of the sample of an alloy = 47.8 g specific heat of the sample =  0.504 J/g °C Change in…

Q: Use the information provided below to calculate the quantity of heat (in kJ) required to convert…

A: Given: Mass = 55.77g Molar mass= 29.3 g/mol Initial Temperature = 120.5°C Final Temperature = -…

Q: Calculate the energy (in kj) required to heat 0.382 grams of water from -47.4 Celsius to 136.1…

A: The given data contains, mass of water = 0.382 g. Temperature T1 = -47.4°C Temperature T2 = 136.1°C…

Q: How much heat (in J) is evolved or absorbed when a 36.2 g sample of aluminum (specific heat = 0.900…

A: In this question gven data , m=36.2gheat capacity=0.900J/(g K)∆T =T2 -T1T2=87.5°C=273+87.5=360.5KT1…

Q: How much heat (in kJ) will be produced to cool off 40.0 g of Al from 81 0C to 180C ? (Specific heat…

A: The question is based on the concept of specific heat capacity.It is defined as the amount of heat…

Q: How much heat is required to change 216.2g of ice at 0 degrees C to water 0 degrees C?

A: We have to find how much heat is required to change 216.2g of ice at 0 degrees C to water 0 degrees…

Q: What is a phase change? Construct a heating-cooling curve for a substance that freezes at –23.0°C…

A: Answers are explained below.

Q: Isopropanol (C3H7OH, aka ‘rubbing alcohol’) has a heat of vaporization of 732.2 J/g. How many Jare…

A: Energy can be calculated as: Q = mHVap

Q: How much heat (in J) is evolved or absorbed when a 35.1 g sample of ethanol (specific heat = 2.46…

A: specific heat capacity is the amount of heat required to raise the temperature of 1 Kg of a…

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy in kJ would be needed to melt a…

A: Given: The heat of fusion of Si, (∆Hfus) = 43.4 kJ/mol. The mass of Si, (m) = 9.29 g. The molar mass…

Q: What is the minimum amount of energy required to heat 145 grams of water to the boiling point of…

A: Mass of water = 145 g Given temperature of water (m) = 87°C The specific heat of water (C) is 4.18…

Q: How much heat is required to convert solid ice with a mass of 960 g at a temperature of -10.0 °C to…

A: Heat in kilojoules can be calculated using the specific heat capacity, temperature difference and…

Q: Find the temperature, in °C, at which water boils on a day in the mountains when the barometric…

A: Given:The normal boiling point of water, (T1) = 373 K.The pressure at normal boiling point, (P1) =…

Q: A 75.1 g. piece of an unknown metal is heated up 45.2 °C when given 2945 J of heat.  What is the…

A: Q=mc∆T Where,  Q= Heat energy m= mass  c= specific heat ∆T= change in temperature Given data: Q=2945…

Q: The following information is given for silicon at 1 atm: To = 2355.00°C Tm 1410.00°C = AH vap…

A: Answer:First of all we will calculate the amount ot heat required to raise the temperature of…

Q: how much energy was lost by the graphite?

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Q: Calculate the heat change in kilocalories for melting 140 gg of ice at 0 ∘C∘C.

A: To determine change of heat for melting of ice:Heat absorption is involved by melting of ice and the…

Q: If the same amount of energy in the form of heat is added to 19.5 g samples of each of the metals…

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Q: How many joules of energy are required to change 50.0 g of Cu from 25.0°C to a liquid at its melting…

A: Given:  Mass of Cu given= 50.0 g  Initial temperature= 25°C  Final temperature= 1083°C  Specific…

Q: How much heat (in kJ) will be produced to cool off 50.0 g of Al from 81 0C to 180C ? (Specific heat…

A: Q = m × s × ∆TWhere, Q = heat evolved; m = mass of substance; s = specific heat and ∆T = change in…

Q: A 337.2 g sample of acetone gas with a temperature of 56.0°C is converted to a liquid with a…

A: Answer :- 182.1 kJ…

Q: A substance is characterized by the thermodynamic data below. Using this, determine the amount of…

A: Mass of substance = 125.0 gm Initial temperature of substance = 2.3 oC

Q: how many joules of heat are required to heat 25.0 g of ethyl alcohol from the prevailing room…

A: Given, mass of ethyl alcohol is 25.0g, initial temperature is 22.50C, final temperature is 78.50C.…

Q: How many joules of heat are absorbed then 35.7 grams of steam is heated from 115°C to 136 °C, the…

A: Given the amount of steam =35.7 graminitial temperature =115 °Cfinal temperature =136 °Cspecific…

Q: Calculate the heat change in joules for melting 17.0 g of ice at 0 degrees Celsius.

A: Mass of ice ( water ) = 17g Temperature = 0°C

Q: For the reaction shown, draw the major organic product(s) and select the best name for the organic…

A: The reaction of an alkene with HBr is the Markonikoff reaction in which carbocation is formed.

Q: A 25.0 g sample of lead, specific heat = 0.128 J/goC, was warmed from 35.0 oC to 200.0 oC. The same…

A: The total amount of heat absorbed by the lead is; Q=mc∆T=25.0 g×0.128 J/g oC×200.0oC-35.0oC=528 J

Q: A piece of ice (O0C) sitting on a hot sidewalk on a hot summer day will eventually melt and then…

A: In vaporization of ice, there would be three processes :  1.) First process will be melting of ice…

Q: The addition of 9.54 kJ of heat is required to raise the temperature of 225.0g of a liquid…

A: Applying formula Q= mc∆t

Q: Ethanol (C2H5OH) melts at -114 degrees Celsius. The ent happy of fusion is 5.02 kJ/mol. The specific…

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Q: Use the information provided below to calculate the quantity of heat (in kJ) required to convert…

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Q: An electric heater is used to supply 52.2 J of energy to a 23.0-g graphite block with an initial…

A: Supplied energy

Q: Data you may need: 1 cal = 4.18 Joules ; density of water = 1g/mL Burning ethanol can be used as…

A: The amount of energy required liquid substance to transform into a gas is called Enthalpy of…

Q: The specific heat of mercury is 0.140 J/g°C. Calculate the heat necessary to raise the temperature…

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Q: Calculate the amount of heat (in joules) required to heat 43 grams of water from 28°C to the…

A: Given, mass of water = 43 g Initial temperature (Ti) = 28°C Final temperature (Tf) = 100°C Amount of…

Q: A substance is characterized by the thermodynamic data below. Using this, determine the amount of…

A: Given, Mass of substance = 125.0 oC Initial temperature of substance = 68.0 oC

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.