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Question- 30 grams of steam at 130 ºC are cooled to the boiling point, condensed, then cooled to 0 ºC and frozen into ice. What is the total change in entropy of the water? What is the total change in Gibbs energy? State any assumptions you are making
I need help for above question. Show each steps for the above problem.
Determine the volume (in Ml) of 1.0 teaspoon. 1 tablespoon = 3 teaspoons; 1 tablespoon = 1/2 fluid ounce
The pKa values of a compound with two ionizable groups are pKa1 = 4.10 and pKa2 between 7 and 10. A biochemist has 10 mL of a 1.0 M solution of this compoud at a pH of 8.00. She adds 10.0 mL of 1.00 M HCl,
if a 60 w light bulb at 120 v is left on in your house to prevent burglary and the power company charges 10 cents per
What is the osmotic pressure of a solution made from dissolving 85.0g of glucose in 800ml of water at 19.0 C.
Determine the Empirical Formula for the following compounds given the following information
a bottle of champagne is 11% alcohol by volume. if there are 750 mL of champagne in the bottle how many mL of alcohol are present
To find the of X-281, you prepare a 0.086 test solution of X-281. The pH of the solution is determined to be 2.70. What is the of X-281
Problem- Phosgene is a potent chemical warfare agent that is now outlawed by international agreement. It decomposes by the reaction
Suppose you want to produce 1L of 3.50M aqueous solution of H2SO4. How many grams of solute are needed to make this solution.
Question- You titrated 1.740 g of a solid unknown acid that was dissolved in 100.0 mL of distilled water; the initial pH value was 2.5. You found that pH=pKa=4.2 when 12.50 mL of NaOH had been added. The concentration of the sodium hydroxide was 0..
1.285g sample of Na2SO4 is exposed to the atmosphere and found to gain 0.393g in mass. What is the percent, by mass, of Na2SO4*H2O in the resulting mixture of anhydrous Na2SO4 and the decahydrate
The Kb of methylamine, CH3NH2, is 4.2 x 10-4. Calculate the pH of a solution of 0.431 M methylamine.
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