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Five grams of the specified pure solvent is placed in a variable volume piston. What are the molar enthalpy and total enthalpy of the pure system when 50% and 75% have been evaporated at: (i) 30°C, (ii) 50°C? Use liquid at 25°C as a reference state. a.Benzene (?L = 0.88 g/cm3) b.Ethanol (?L = 0.79 g/cm3) c.Water without using the steam tables (?L = 1 g/cm3) d.Water using the steam tables
If the ethane is burning at the rate of 0.20 mol/L.s, at what rate are CO2, and H2O being produced?
Determine after how many days will one-sixteenth of a given amount of radon-222 remain and Determine the values of Delta E and Delta H for the system?
If I add 1.65 L of water to 112 grams of sodium acetate...What is the molality of NaC2H3O2 in this solution?
how much energy is required to vaporize 48.7 g of CH2Cl2 at its boiling point if its Hvap = 31.6 kg/mol
How much heat is required to warm 227 g of ice from -45.5°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C.
Consider 25.0 g of water at 21.7°C that are mixed with 25.0 g of water at 43.3°C in a foam cup calorimeter. The equilibrium temperature reached was 30.4°C.
A buffer that contains 0.55 M base, B, and 0.30 M of its conjugate acid, BH+, has a pH of 8.94. What is the pH after 0.0020 mol HCl is added to 0.25 L of this solution.
An oxygen tank kept at 20.0?C contains 28.0 moles of oxygen and the gauge reads 31.0 atm. After two weeks, the gauge reads 20.7 atm. How much oxygen was used during the two-week period?
if a liquid has a density or 1.17 g/cm(3) and a mass of 3750 g calculate the volume?
Benzene is a organic solvent with the formula, The volume occupied by 1 micromole of liquid benzene and the volume occupied by 1 megamole of benzene as a vapor at STP (assume an ideal gas)
Equilibrium shift of the reaction and the pH of solution, 1. The pressure on each of the following systems is decreased from 5 atm to 1 atm. Which way does the equilibrium shift in each of the following systems?
Find the volume of oxygen gas required to react completely with iron and Calculate the volume of oxygen gas at STP that is required to completely react with 61.0 g of iron.
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