Entropy change for freezing
What is the entropy change for freezing 4.25 g of C2H5OH at 158.7 K? H = -4600 J/mol.
Answer in units of J/K.
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If you started a ride with ice packs that held 1800 of frozen water at 0 , and the temperature of the water at the end of the ride was 32 , how many calories of heat energy were absorbed?
What mass of CaCl2 , when dissolved in 100.00 g of water, gives an expected freezing point of 5.0°C; CaCl2 is ionic? What mass of glucose would give the same result?
An expansion project being considered by your firm has an initial cost of $1,250,000 and expected net cash flows of $270,000 per year for the first 3 years, and $380,000 per year for the next three years. Assume that the project will be terminated
A gas is placed in a storage tank at a pressure of 20.0 atm at 20.3 C. As a safety device, there is a small metal plug in the tank made of a metal alloy that metls at 125 C. if the tank is heated.
Ammonia gas at 223°C and 90. atm flows into a reactor at a rate of 480. L/min. Carbon dioxide at 223°C and 43 atm flows into the reactor at a rate of 600. L/min. What mass of urea is produced per minute by this reaction assuming 100% yield
Calculate the pH at teh second equivalence point in the titration of 0.1000L of a 0.1000 M solution of the weak diprotic species H2A that is titrated with standardized 0.1000 M KOH.
A compound called pyrene has the empirical formula C8H5 . When 4.04 g of pyrene is dissolved in 10.00 g of benzene, the boiling point of the solution is 85.1°C. Calculate the molar mass of pyrene and determine its molecular formula. The molal
What is the expected freezing point of a solution of 110.5 g of H2SO4 in 225 g of water? Assume sulfuric acid completely dissociates in water.
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but I would like to discuss to what extent employers should/should not influence or curb political participation in their workplaces.
Suppose you are the head of an island nation with a poor, growing population and the natural resources of the island are being degraded.
Question: What was the economic and political impact, if any protect the health and welfare to citizens ?
Problem: Article 3 of the Texas Constitution sets up the Texas Legislature. It also does which of the following?
Summarize how the ERA can be ratified and explain why this is the most likely way. You will draw on instances that are important to you
Which amendment to the U.S. Constitution is often called the "States' Rights Amendment" and is commonly used by states to challenge
Mechanisms of State-Led Development:** - **Industrial Policy:** Both countries used targeted industrial policies to support specific sectors, such as electroni