User Account

All Pages

Associated with a change in temperature

Assignment Help Chemistry
Reference no: EM131374403

Equations

The heat energy associated with a change in temperature that does not involve a change in phase is given by

q=msΔT

where q is heat in joules, m is mass in grams, s is specific heat in joules per gram-degree Celsius, J/(g⋅°C), and ΔT is the temperature change in degrees Celsius. The heat energy associated with a change in phase at constant temperature is given by

q=mΔH

where q is heat in joules, m is mass in grams, and ΔH is the enthalpy in joules per gram. 

Physical constants

The constants for H2O are shown here:

  • Specific heat of ice: sice=2.09 J/(g⋅°C)
  • Specific heat of liquid water: swater=4.18 J/(g⋅°C)
  • Enthalpy of fusion (H2O(s)→H2O(l)): ΔHfus=334 J/g
  • Enthalpy of vaporization (H2O(l)→H2O(g)): ΔHvap=2250 J/g

Part A 

How much heat energy, in kilojoules, is required to convert 52.0 g of ice at -18.0 °C to water at 25.0 °C ?

Express your answer to three significant figures and include the appropriate units.

Reference no: EM131374403

Questions Cloud

What is the molecular formula for tepp : The first of these organophosphorus insecticides to be produced was tetraethyl pyrophosphate, TEPP, which is 33.11% carbon, 6.95% hydrogen, 38.59% oxygen, and 21.35% phosphorus. It has a molecular mass of 290.190. What is the molecular formula for..
Summarize the main events of the story : First, try to summarize the plot of Steinbeck's story. Here, in 3 or 4 sentences, I'd like you to answer the question: "What happens in this story?" Try to summarize the main events of the story without going into every detail
Conduct an informal interview with an adult family member : Conduct a 20-minute informal interview with an adult family member, peer, or co-worker practicing the introduction and opening phase of a clinical interview. Request that the individual address issues related to career, education, relationships, o..
Does the vision statement meet the challenges : Evaluate the article and describe the current vision statement and the change occurring within the organization. Does the vision statement meet the challenges of the overall change initiative?
Associated with a change in temperature : The heat energy associated with a change in temperature that does not involve a change in phase is given by
Find the real amounts corresponding to the actual amounts : Find the real amounts (with today as the base year) corresponding to the actual amounts shown below, for a 4% inflation rate.
Create a demo object and try its pickup test method : The taxi-company-outline project defines a Demo class to create a pair of Passenger Source and TaxiCompany objects. Create a Demo object and try its pickup Test method. Why is the Taxi Company object unable to grant a pickup request at this stage?
Wavelength of the x-ray beam : If the interplanar distance in the crystal is 287 pm, and the angle of maximum reflection is found to be 7.25 °, what is the wavelength of the x-ray beam? (Assume n=1.)
Find the present worth today in real value : Find the present worth today in real value corresponding to the actual values shown below, for a 4% inflation rate and a 4% interest rate.

Reviews

Write a Review

Chemistry Questions & Answers

  Explain what is the maxium temperature in k the gas

Suppose the maxium pressure the vessel can safely with stand id 1.60 atm. what is the maxium temperature in K the gas can have before its pressue might burst the vessel

  Explain the change in the boiling point of a solution

What is the change in the boiling point of a solution made by dissolving 14.7 g of C6H12O6 into of water. the density of water is and.

  Explain oxalic acid and naoh react according to the equation

If 29.58 mL of 0.550 M NaOH is required to titrate the oxalic acid in the 0.554g sample to the equivalence point, what is the weight percent of oxalic acid in the mixture. Oxalic acid and NaOH react according to the equation H2C2O4 (aq) + 2 NaOH(a..

  Explain the preparation of acetate buffer

Decribe the preparation of the 100mL of a 50 mM acetate buffer at pH 5.5 beginning iwth sodium acetate and 1M acetic acid

  Explain analyze the groups bonded to the carbon of interest

Analyze the groups bonded to the carbon of interest. Every H contributes +1, and every oxygen contributes -2. An -OH group contributes (-2 + 1 = -1). Ignore carbons bonded to the carbon of interest. The sum of the oxidation states must be zero, si..

  Compute the activation energy for the reaction

The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln k versus 1/t (in K ) is linear and has a slope of ?1.13×10^4 K.

  Explain what is 10.11 grams of calcium carbonate decomposes

Explain what is 10.11 grams of calcium carbonate decomposes by heat to8.51 grams of calcium oxide as well as carbon dioxide gas, explain what mass of ammonia reacted and what would the balanced chemical equation be written like

  Vo2 depending on temperature and pressure

VO2 can exist in insulating or metallic form, depending on temperature and pressure.

  Evaluate the root mean square speed of br2 molecules

Calculate the root mean square speed of Br2 molecules at 23 degrees celsius and 40 degrees celsius and 1 atm pressure

  State copper is electroplated from cuso4 solution

copper is electroplated from CuSO4 solution. A constant curent of 4.39 A is applied by an external power supply. How long will it take to deposit 1.00x10^2g of Cu

  Explain when burned in oxygen yielded a mixture

when burned in oxygen, yielded a mixture of CO2 and SO2 in which the number of moles of CO2 was one-half the number of moles of the SO2. How many grams of C contained in the mixture?

  Explain what is the expected freezing point depression

If a protein sample has a molar mass of approximately 14,000 u, what is the expected freezing point depression when 1.00g is dissolved in 50.0mL of distilled water

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd