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Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after the 20.0 mL of HNO3 have been added.
You dissolve 261 mmol of sodium bicarbonate into a total volume of 1.2 L. What is the molarity of sodium bicarbonate in this solution?
What is the final temperature in a squeezed cold pack that contains 41.0 g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/g*C for the solution, an initial temperature of 26.5C.
Indicate whether HC4H7O2 behaves as an acid or a base, and support your choice with a brief explanation.
it is common to see the the strength of aspirin tablets listed in terms of the number of grains of ASA per tablet. using the conversion factor of 15.4 grains per gram ASA
2K(s)+2H2O(l)--> 2KOH(aq) + H2(g) A 5.00 g chunk of potassium is dropped into 1.00 kg water at 24 deg C. What is the final temperature of the water after the preceding reaction occur.
A canister is filled with 310 g of ice and 100 g. of liquid water, both at 0 C . The canister is placed in an oven until all the has boiled off and the canister is empty.
In the Haber-Bosch Process, nitrogen and hydrogen gas are reaceted under high temperature (500 C) and pressure (200 atm) to form ammonia gas (NH3) according to the equation
Predict the outcome of the following reactions represented by the following equations by using the activity series, and balance the equations.
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen cyanide
When a 1.30-g sample of ethanol (alcohol) is burned in a calorimeter, the heat released increases the temperature of 870g of water in the calorimeter from 18.5 C to 28.9 C .
Ka for this species is 10-4 and Kb is 10-8. Nonetheless, the Ka and Kb reactions proceed to nearly the same extent when NaHA is dissolved in water.
if you mixed 100 ml of 0.1M KI with 100ml of 0.1M K2S2O8. How will you calculate the diluted (or "new") concentrations of them
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