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An open container holds 0.550 kg of ice at - 15.0 degree celsius. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 800 J/min for 500 min .
Part A
After how many minutes does the ice start to melt?
Part B
After how many minutes, from the time when the heating is first started, does the temperature begin to rise above 0 ?
Part C
Plot a curve showing the temperature as a function of the elapsed time.
Ether usually known as Ethoxyethane, is often used to extract organic compounds from aqueous solution. Which of its properties A does notfavour its selection for this use?
The production of iron and carbon dioxide from Iron (3) oxide and carbon monoxide is an exothermic reaction? how many kj of heat are produced when 3.40 mol Fe2O3 reacts with excess of CO.
Draw the structures and write the IUPAC names of the two alkenes formed when 2-hexanol undergoes a condenstation reaction in the presence of an acid catalyst
The ionization energy of tin is 708.0 kJ/mol. Calculate the maximum wavelength of light that will ionize tin.
Steam is condensed at 100 °C and the water is cooled to 0 °C and frozen to ice. What is the molar entropy change of the water
Liquid methanol (CH3OH) can be used as an alternative fuel in pickup and SUV engines. An industrial method for preparing it uses the catalytic hydrogenation of carbon monoxide
Write the balanced formula unit equation for the reaction of sodium with oxygen (use major product). What is the sum of the coefficients
Draw the line and wedge structures of the products obtained on addition of iodine azide to both cis and trans-2-butenes. Assign ‘R' or ‘S' to the asymmetric centers in your product.
A sample consisting of various gases contains 3.1×10-6 mole fraction of radon. This gas at a total pressure of 34 is shaken with water at 30 . Calculate the molar concentration of radon in the water.
Write the balanced formula unit equation for the reaction of magnesium with hydrochloric acid. What is the sum of the coefficients? Don't forget coefficients of one
Calculate th pH of 1.00 L of a buffer of 1.00 M CH3COONa/1.00 M CH3COOH to which 0.210 mol of NaOH has been added
Why does tellurium have an endothermic electron affinity. In other words, why would it take energy to add an electron to it
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