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When sodium sulfate and barium nitrate react, barium sulfate and sodium nitrate are formed. What mass of barium sulfate is obtained when 100.0 mL of 0.105 M sodium sulfate is added to 50.0 mL of 0.0850 M barium nitrate? What is the concentration of sodium sulfate that remains after the reaction has finished? (Hint: total volume?)
If 545 mL of oxygen gas is collected at 21°C and 745 mmHg , what is its volume at STP?
Ammonia is kept at 15 degrees Celsius in a 10.0 L flask with a pressure of 1.95 atm. What is the pressure in the flask if the temperature is increased to 25 degrees Celsius.
calculate the velocity of electrons emitted from molecules in which the binding energies are 10ev, 100ev, and 500ev
question which of the following reagents might serve as the basis for a simple chemical test that would distinguish
At a certain temperature the equilbrium constant is 396 K for H2(g) + I2(g) ↔ 2HI(g) , Calculate the the equilbrium constant for 0.5H2(g) + 0.5I2(g) ↔ HI(g)
At 25ºC the solubility product constant, Ksp, for magnesium phosphate, Mg3(PO4)2, is 1.0´10-24. The solubility product constant for magnesium fluoride, MgF2, is 7.0´10-11.
Transesterification occurs when an alcohol (in excess) reacts with an ester. Draw the skeletal structure of the ester formed when ethyl propanoate (propanoate = propionate) reacts with 1-propanol.
Problem- A current of 3.0 amps passing for 2.00 hours through a molten tin salt deposits 13.3 grams of tin. A) What is the oxidation state of the tin
The following percentages of sulfate were found in a sample: 30.54, 30.34, 30.52 and 31.05. Find the mean, the standard deviation, and the relative standard deviation. Can any of the results be discarded
If this reaction is only 92.0% efficient and 424 g of the ferric oxide is required to make 4.20 mol iron, what is the percent purity of the ferric oxide?
What is the pH of 5.0756mg barium hydroxide octahydrate in4.6 liters of water, and the pH of 0.19789g dihydrogen sulfate in 374mL of water both are separate and at 25 degrees C with nothing else present, assume no change of volume and or temp.
The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is ?0.43 V. Use the data in Appendix D to determine which of the following is capable of reducing Eu3+(aq) to Eu2+(aq) under standard-state conditions
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