A molecule with a molar mass of 78.11 g/mol, a AHfus of 10.0 kJ/mol, a AHvap of 30.72 kJ/mol and a melting point temperature of 5.53°C. How much heat is required to transform 57.4 g of the solid (at 5.53°C) to a liquid (also 5.53°C)? Your Answer: Answer units

Q: What quantity of heat in kJ must be removed from a 35.0 g sample of water initially at 43.0 oC for…

A: Given : Mass of water = 35.0 g Initial temperature of water = 43.0 oC And final temperature of water…

Q: An organic solvent with a molar mass of 56.45 g/mol have a normal boiling point of 45.0 °C and a…

A:

Q: O Macmillan Learning A 0.538 g sample of steam at 105.3 °C is condensed into a container with 5.77 g…

A: specific heat:  The specific heat capacity, or the amount of heat needed to raise the temperature of…

Q: What is the enthalpy change in units of kJ for converting 27.9 grams of water vapor at 112.1 Celsius…

A: Molar mass of water = 18 g/mol Calculation of no. of mol of water:

Q: 8) If the heat of fusion for water is 80. cal/g, how many calories are needed to melt 45.0 g of ice…

A: The heat of fusion for water is 80 cal/g. It is required to calculate the calories needed to melt 45…

Q: Calculate the amount of heat (in joules) required to convert 192.5 g of water at 20.0°C to steam at…

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

Q: How much heat would be required to convert 390 g of solid benzene, C6H6 (s), at 5.5°C into benzene…

A: Given : Mass of benzene = 390 g Initial temperature of benzene = 5.5 oC And final temperature of…

Q: How much heat is released when 80.0 g of steam at 250.0°C cools and condenses to water at 10.0°C?…

A: Given Data: Mass of steam = 80.0 g Ti of steam = 250.0°C Tf of steam = 10.0°C Change in temperature,…

Q: Methane (CH₄ ) has a boiling point of 164°C at 1 atm anda vapor pressure of 42.8 atm at…

A:

Q: What amount of heat (in kJ) is required to convert 10.1 g of an unknown solid (MM = 83.21 g/mol) at…

A: We will write all steps occuring in the change os solid to liquid , then calculate heat required.

Q: What amount of heat (in kJ) is required to convert 29.9 g of an unknown solid (MM = 67.44 g/mol) at…

A: The objective of the question is to calculate the total amount of heat required to convert a solid…

Q: What is the quantity of heat (in kJ) associated with cooling 150.3 g of water from 25.60°C to ice at…

A: Given data mass of water : m=150.3 g Initial temperature of water : T1=25.60 °C Melting temperature…

Q: What amount of heat (in kJ) is required to convert 16.6 g of an unknown solid (MM = 67.44 g/mol) at…

A: We have to find amount of heat (in kJ) is required to convert 16.6 g of an unknown solid (MM = 67.44…

Q: 6. Calculate the energy in the form of heat (in kJ) required to change 76.9 g of liquid water at…

A:

Q: What amount of heat (in kJ) is required to convert 29.3 g of an unknown solid (MM = 67.44 g/mol) at…

A: When a certain amount of heat is added to a system, the temperature associated with that system is…

Q: What amount of heat (in kJ) is required to convert 26.6 g of an unknown solid (MM = 92.14 g/mol) at…

A: Given : Initial temperature of solid = -115oC Final temperature of solid = 32.3 oC Mass of solid =…

Q: The following information is given for antimony, Sb , at 1 atm: Boiling point = 1440.0°C   Heat of…

A: SOLUTION Mass of liquid antimony = 44.9 g Heat of fusion = 38.5 cal/g Energy removed = 38.5…

Q: What amount of heat (in kJ) is required to convert 19.5 g of an unknown solid (MM = 83.21 g/mol) at…

A:

Q: Pure methanol (CHOH) has a specific latent heat of fusion of 98.9 kJ/kg and a melting point of -98.0…

A: The question aims toFind the final temperature of a calorimetric system. The state of the components…

Q: What amount of heat (in kJ) is required to convert 21.4 g of an unknown solid (MM = 67.44 g/mol) at…

A: Mass of Unknown solid = 21.4 g = MMolar mass of Unknown solid = 67.44 g/moleNo of moles of Unknown…

Q: What amount of heat (in kJ) is required to convert 29.7 g of an unknown solid (MM = 67.44 g/mol) at…

A: Here we are required to find the total amount of heat needed to convert 29.7 g of solid from -15.4°C…

Q: An organic solvent with a molar mass of 56.45 g/mol have a normal boiling point of 45.0 °C and a…

A: Mass of solvent = 24.0g Molar mass of organic solvent = 56.45g/mole Number of moles = Mass / Molar…

Q: If a particular liquid has a normal boiling point of 338.0 K and a vapor pressure of 75.0 mmHg at…

A: Hi, as you have posted multiple questions and have not mentioned which question you want us to solve…

Q: What is the enthalpy change for converting 10.0 g of ice at -15.0 °C to water at 55.0 °C in kJ. The…

A: Mass of ice = 10 g Initial temperature = - 15°C Final temperature = 50°C Specific heat of ice = 2.09…

Q: Consider the proposed mechanism for the decomposition reaction 2 H2O2(aq) →2 H2O(1) + O2(g) in the…

A: Since you have posted multiple questions . So, as per the guidelines we can solve only one question…

Q: What amount of heat (in kJ) is required to convert 20.0 g of an unknown solid (MM = 83.21 g/mol) at…

A: Given Molecular weight of solid = 83.21g/mol Mass = 20g specific heat capacity of solid = 2.39…

Q: What amount of heat (in kJ) is required to convert 30.0 g of an unknown solid (MM = 67.44 g/mol) at…

A:

Q: How much heat energy (in J) is involved when 55 grams of gaseous water, at 107 °C is cooled to 56°…

A: Given : mass of water = 55 g       Initial temperature= 107°C    Final temperature= 56°C

Q: What amount of heat (in kJ) is required to convert 15.5 g of an unknown solid (MM = 83.21 g/mol) at…

A: Solution - According to the question - Given values - Number of moles = 15.5/83.21 = 0.186 moles…

Q: A 0.554 g sample of steam at 106.0 °C is condensed into a container with 5.20 g of water at 16.4 °C.…

A: Given,The mass of steam = 0.554 g,The mass of Water = 5.20 gThe initial temperature of steam is =…

Q: What amount of heat (in kJ) is required to convert 10.1 g of an unknown solid (MM = 83.21 g/mol) at…

A:

Q: A total of 853 cal of heat is added to 5.00 g of ice at -20.0 °C. What is the final temperature of…

A:

Q: What amount of heat (in kJ) is required to convert 17.2 g of an unknown solid (MM = 83.21 g/mol) at…

A: Given data mass of solid : m=17.2 g molar mass : MM=83.21 g/mole Initial temperature : T1=-5.00°C…

Q: How much heat is required to convert 5.23 g of ice at -10.0 ∘C to water at 23.0 ∘C? (The heat…

A: The objective of this question is to calculate the total amount of heat required to convert 5.23 g…

Q: What amount of heat (in kJ) is required to convert 26.9 g of an unknown solid (MM = 67.44 g/mol) at…

A: Answer is explained below. Given, Mass of unknown solid = 26.9 g. Molar mass of solid = 67.44 g/mol.…

Q: How much heat is required to convert 42.0 g of ethanol at 20 ∘C to the vapor phase at 78 ∘C?

A: Given , mass of ethanol = 42.0 g initial temperature of ethanol , Ti= 20°C Final temperature of…

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.