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What quantity of heat is required to change 40.0 g of ice at melting point to liquid water? The heat of fusion of ice is 335 J/g. The answer should be 13400 J Please include steps in solving
the neutralization of HCL with NaOH at 25 degrees celsius is -79.9 kj/mol. Calculate the equilibrium constant for the reaction.
The stopcock between A and B is opened. The pressure in A and B is now 219mmHg. How many moles of H20 are in the system?
A 1-in. thick steel plate measuring 10 in. in diameter is heated from below by a hot plate, its upper surface exposed to air at 80oF. The heat-transfer coefficient on the upper surface is 5 Btu/h ftoF and k for steel is 25 Btu/h ftoF.
A 25.0 mL sample of 0.150 M hydrofluoric acid is titrated with a 0.150 M NaOH solution. What is the pH at the equivalence point? The Ka of hydrofluoric acid is 4.50 × 10-4.
Copper(II) iodate precipitates from iodate solution. The formula of the precipitate is CU(IO3)2. A saturated solution of this substance was made in 0.01 M KIO3.
Discuss how plastics are used in everyday life and cutting edge technology and what the pitfalls are of plastics.
A sample of oxygen that occupies 1.00 × 10-6 mL at 575 mm Hg is subjected to a pressure of 1.25 atm. What will the final volume of the sample be if the temperature is held constant
what volume should you dilute 43.5mL of a 4.00M KI solution so that 24.0mL of the diluted solution contains
Using the values from Appendix C, calculate the value of change H degrees for each of the following reactions
The other criterion is very basic and relates to whether simple or fractional is selected
lead nitrate is needed to precipitate all of the chloride ion in a 10.00-mL sample of an unknown. What is the molarity of the chloride ion in the student's unknown?
Calculate how many joules are needed to heat and calculate the theoretical volumes of 1.0 M Tris base?
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