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A 1.00 L flask is filled with 1.00 g of argon at 25 °C. A sample of ethane vapor is added to the same flask until the total pressure is 1.350 atm. What is the partial pressure of argon in the flask and what is the partial pressure of ethane in the flask.
A compound contains only C, H, N and O . Combustion of a 1.48g sample in excess oxygen yields 2.60g of CO2 as well as 0.799g ofH2O. A separate experiment shows that a 2.43gsample contains 0.340g of N. Explain what is the empirical (simplest) formu..
Determine the chemical formula of each compound and refer to the formula to calculate the mass percent composition of each constituent element.
The reaction caused the temperature of the solution to rise from 23.27 °C to 27.49 °C. If the solution has the same density and specific heat as water, what is PH for this reaction per mole of H2O produced. Presume that the total volume is the sum..
The following results were obtained for the determination of sulfur in another coal sample. The average for 3 trials was 2.28 %S. Report the 95% confidence limits for the average sulfur content in this sample based on the knowledge from extensive ..
For Hickman still or for test tube microscale distillations, compare the refractive index data for simple and fractional distillations. Do the data suggest which distillation procedure is more efficient? Briefly explain.
ag has a density 10.5 g cm3.a graduated cylinder has 28.0 ml of h2o. determine the new water level after 35.6 grams of
Using concentrated acetic acid and solid sodium acetate, how would you prepare 10 l of 0.1 M acetate buffer at pH 4.75? The pKa for acetic acid is 4.75. What Volume of concentrated acetic acid is needed (mL)?
Concentrated nitric acid (HNO3) has a density of 1.42 g/mL and is 70% nitric acid. Calculate the molarity of the acid if 30 mL of the concentrated acid is mixed with 255 mL of water.
Problem- Part 1) What mass of potassium hydrogen phthalate, KHP is needed to neutralize 40.00mL of 0.100 m NaOH. Part 2) What is the pH of the mixure if 10.00mL of 0.100 M NaOH is added to a 20.00mL, 0.10 M ascorbic acid solution
a 45- piece of ice at 0 is added to a sample of water at 12. all of the ice melts and the temperature of the water
What is the molarity of solution when .8292 grams of Nickel
Explain what mass of precipitate will form if 1.50 L of concentrated Pb(ClO3)2 is mixed with 0.750 L of 0.200 M NaI. Presume the reaction goes to completion.
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