Asked Nov 7, 2019

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.40kg of water at 23.7°C. During the reaction 149.kJ of heat flows out of the flask and into the bath.Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is 4.18·J·g−1K−1. Be sure your answer has the correct number of significant digits.


Expert Answer

Step 1

The specific heat can be defined as the amount of heat per unit mass that is needed to raise the temperature of given substance by one degree Celsius.

The specific heat of water is 4.18 joule/gram °C. This can be used to calculate the heat required to raise the temperature for given substance.

Step 2

The relation between heat change and specific heat is shown below;


Image Transcriptionclose

9- т хсх AT Here q Amount of heat supplied m Mass of the substance c Substance's specific heat AT Change in temperature

Step 3


q = 149 kJ = 149 x 103 J
m = 8.40 kg = 8400 g
c = 4.18 j/g °C
Tf = final temperature = ...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Chemical Thermodynamics

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: 11.61 The phase diagram for neon is blupl Liquid Supercritical 103 Stio nobtoin3o 102 fluid bpszs st...

A: a. The normal melting point is the temperature where solid becomes liquid at 1atm pressure. Followin...


Q: CH 09 HW xercise 9.21 Part A Given the balanced equation, calculate the mass of product that can be ...

A: Given,Mass of Zn metal = 2.10 gThe molar mass of Zn = 65.38 g/molThe molar mass of O2 = 31.998 g/mol...


Q: identify the oxidized or reduced atoms: P4(s) + 5 O2(g) → P4O10(s) CO2(g) + H2(g) ⇌ CO(g) + H2O(g) 4...

A: Oxidation and reduction reactions are the processes involved loss or gain electron.


Q: If light has a wavelength of 565 nm, what is the energy of this light expressed with units of kJ/mol...

A: Click to see the answer


Q: 2. For a mass of 0.010 g Mg and 5.0 mL of 1.00 M HCl, calculate the theoretical partial pressure of ...

A: The chemical reaction is as follows,


Q: When 3.00 g of sodium hydroxide (NaOH) was dissolved in 100.00 g of water a value of 11.00oC was obt...

A: 1.The concentration of a solution expressed in terms of the number of moles of solute per liter of s...


Q: A 100.0-mL flask contains 0.250 g of a volatile oxide of nitrogen. The pressure in the flask is 760....

A: Given dataVolume of the gas = 100.0mL                              = 0.1LMass of the gas = 0.250gPre...


Q: 5. A,B and, C

A: In dash-wedge notation, the plane of the paper contains two bonds. The third bond is drawn towards t...


Q: An unknown gas has a density of 2.77g/L at STP. What is the molecular weight (in g/mol) of this unkn...

A: Click to see the answer