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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
What error will this cause in their determination of the amount of iron in the table?
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.
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.
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 G rxn at 25 degrees Celsius for the reaction described by the equation.
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.
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
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
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
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
What's the energy difference between axial and equitorial conformation of hydroxycyclohexane. What is hydroxycyclohexane
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.
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