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If the pressure of 50.0 mL of oxygen gas at 100 °C increases from 735 mm Hg to 925 mm Hg, what is the final volume? Assume temperature remains constant.
A mixture of gases containing 21.0 g of N2, 106.5 g of Cl2, and 12.0 g of He at 14 oC is in a 50.0 L container. What is the partial pressure of N2?
calculate the approximate mass of KHP required to react with 40.0 mL of 0.125 M sodium hydroxide in titration.
A 350 mL air sample collected at 35 degrees C has a pressure of 550. mmHg. What pressure will the air exert if it is allowed to expand to 425 mL at 57 degrees C?
Complete the following equations in molecular form. The reactant coefficients are correct. Indicate precipitation, redox, or acid – base. Write the equations in NET ionic form (no spectator s). Balance charges and use the correct suffixes.
Calculate how many grams of phosphorus are present in 2.68 moles of phosphorus pentachloride(PCl5) and also determine the numbers of moles of chlorine are present in 3.71 grams of phosphorus pentachloride?
Calculate the pH of each of the following strong acid solutions: 5.00 mL of 1.00 M HCl diluted to 0.500 L d) a mixture formed by adding 50.0 mL of 0.020 M HCL to 150 mL of 0.010 M HI
If 495g NaOH is dissolved in a final volume of 20.0 L, what is the molarity of the solution.
.914g sample of stannous flouride gives a 1,078g precipitate of stannous phosphate. calculate the theoretcial yeild?
When you standardized the Sodium thiosulfate, what molarity of Na2S2O3 did you observe for each of your 3 trials.
A proton in a linear accelerator has a de Broglie wavelength of 127 pm. what is the speed of the proton?
Using a sample that was dissolved in CH 2 Cl 2 , mixed alumina, evaporated the CH 2 C l2 , loaded and began to run his column, starting with C 6 H 14
A system conducts 238 cal of heat to the surroundings while delivering 331 cal of work. what is the change in internal energy of the system (in cal).
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