Water is added to dry concrete or cement

Assignment Help Chemistry
Reference no: EM13690843

Question- CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The reaction that occurs is

CaO(s)+H2O(l)?Ca(OH)2(s)

The product is commonly called slaked lime.

Assuming the commonly utilized standard-state temperature of 25?C compute ?S total for this reaction using table from the table below.

Please show how you obtained the answer

Reference no: EM13690843

Questions Cloud

Calculate millimoles and mass of oxalate in unknown sample : Question- Calculate millimoles and mass of oxalate in the unknown sample from the following data: Mass of unknown sample is 0.5060 grams. Volume of potassium permanganate solution titrated is 30 mL.
Glucose is pumped into some animal cells : Question- Glucose is pumped into some animal cells by a symporter powered by the simultaneous entry of Na+. The entry of Na+ provides a free energy input of 10.8 kJ/mol under typical cellular conditions (external [Na+]= 143 mM, internal [Na+] = 14..
What was the molarity of the permanganate solution : Question- Iron is often utilized to standardize permanganate solutions. A 0.158 g sample of pure iron wire was dissolved in dilute sulfuric acid to form a solution of iron (ii) sulfate. This was titrated with 31.23 ml of potassium permanganate sol..
Temperature of the mixture upon reaching thermal equilibrium : Question- A 32.2g iron rod, initially at 22.8 degree C, is submerged into an unknown mass of water at 63.7 degree C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 58.4degree C.
Water is added to dry concrete or cement : Question- CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The reaction that occurs is
Determine the concentrations of unknown solutions : Question- I am trying to write up a lab report where I used colorimetry to check the absorbance of a reagent with different concentration of solution but I'm having a tough time using my calibration curve to determine the concentrations of unknown..
What is the lewis definition of acids and bases : What is the Lewis definition of acids and bases. Why is it broader than the Bronsted/Lowry definition and why does it make more sense
Types of cations that is more stable than tertiary cations : Question- List examples of three types of cations that is more stable than tertiary cations. Draw examples of each and explain why they are more stable than tertiary cations.
Draw a primary cation in these mechanisms : Question- The reaction of chloromethylcyclobutane with aluminum chloride yiel methylenecyclobutane, methylcyclobutane, and cyclopentane. Show the mechanism or mechanisms for these products. Do not draw a primary cation in these mechanisms as it is h..

Reviews

Write a Review

Chemistry Questions & Answers

  Explain determination of the amount of iron in the table

What error will this cause in their determination of the amount of iron in the table?

  Compute the ratio of dihydrogen phosphate to hydrogen

Calculate the ratio of dihydrogen phosphate to hydrogen phosphate in the blood at pH 7.4. The Ka = 6.3 x 10 -8 5. For a weak acid with a pKa of 6.0 calculate the ratio of conjugate base to acid at a pH of 5.0.

  Evaluate the feed water exit temperature

The steam is comes out of the feed water at 200 C. The water at a flow rate of 500 kg/h enters the feed water heater at 20C. Calculate the feed water exit temperature.

  Calculate the equilibrium constant (kc) for the reaction

A sample of pure NO2 is heated to 334 degree C at which temperature it partially dissociates according to the equation 2NO2(g)-->2NO(g)+O2(g)

  Utilize the data given here to calculate the values of delta

Utilize the data given here to calculate the values of delta G rxn at 25 degrees Celsius for the reaction described by the equation.

  How to evaluate the ph after the addition of hno3

A 75.0 mL volume of 0.200 M NH3 (Kb=1.8*10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 13.0 mL of HNO3.

  Compute the total pressure inside the container

A 100L container has a 100g of ammonia gas and 50.0g of nitrogen gas at 500 degrees celcuis. Calculate the total pressure inside the container

  Explain what is the annual cost of operation

what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F

  Explain xanthine is a biological precursor of uric acid

Xanthine is a biological precursor of uric acid. What can you say about the molar absorptivity of xanthine if absorbance measurements of 250 μM, 300 μM, and 350 μM buffered aqueous solutions

  Explain what is the standard deviation

The subsequent four numbers are estimates of the mass of an object- 4.30 g, 5.82 g, 5.79 g, and 5.47 g. Explain what is the standard deviation to two significant figures

  Explain what is hydroxycyclohexane

What's the energy difference between axial and equitorial conformation of hydroxycyclohexane. What is hydroxycyclohexane

  Converted to nucleotides and incorporated into nucleic acid

Several artificial nitrogenous bases, called base analogues, can be taken up by cells, converted to nucleotides, and incorporated into nucleic acids. They are often potent mutagens, and some are used in cancer chemotherapy.

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!

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