How many grams of koh must be added to the buffer
A buffer is prepared by mixing mL of .452 M HCl and .500 L of .400 M sodium acetatae. How many grams of KOH must be added to .500 L of the buffer to change the pH by .175 units.
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An insulated container holding 4.50 of water at 6.0. Assuming that no heat is lost to the surroundings, what will be the final temperature of the mixture?
In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. What is the acceleration of the child and sled?
A weak monoprotic acid is exactly neutralized by 11.17mL of a standardized 0.1455M NaOH solution. If the Ka of the acid is 0.00084, what is the pH at the half-equivalence point?
A 1.70-g sample of a large biomolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point c
A 2.0-m-long, 500g rope pulls a 10kg block of ice across a horizontal, frictionless surface. The block accelerates at 2.0m/s^2. How much force pulls on the block of ice and how much force pulls on the rope?
A student adds 6.90 of a 0.380 solution to the beaker. How much will the pH change? The of acetic acid is 4.760.
A person throws a stone straight upward at an initial speed of 15 m/s on a bridge that is 25m above the surface of the water. If the stone just misses the bridge on the way down, What is the speed of the stone just before it hits the water?
In an experiment, 5.00 L of N2 is saturated with water vapor at 22°C and then compressed to half its volume at constant T.
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