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1. Label the acid and the base, and the conjugate pairs for this reaction. HCO2H+H2O-----> CO2H+H3O 2. Calculate the pH of a 0.25 mol/L solution of magnesium hydroxide. 3. A titration was done to determine the concentration of a sample of HCI. The volume of the acid sample used in each titration trial was 10.00 mL. The following data also was collected: Trial Burette Reading Burette Reading Volume Of Standard @ Start (mL) @ End (mL) Used (mL) 1 0.00 11.30 ? 2 11.30 22.60 ? 3 22.60 33.80 ? Standard Used: 0.25M Ca(OH)2 a. Write the balanced neutralization reaction equation for this titration. b. Write a brief procedure that would have been used to carry out the titration. Just include the key steps (terms and measurements). c. What was the average volume of Ca(OH)2 used? d. Calculate the concentration of the HCI sample.
An aerosol spray can with a volume of 350. mL contains 2.29 g of propane gas (C3H8) as a propellant. (a) If the can is at 25°C, what is the pressure in the can? (b) What volume would the propane occupy at STP?
If I have 7.0 moles of gas at a pressure of 0.10 atm and at a temperature of 50.1 degrees C in a balloon, what is the volume of the balloon? (Round to one decimal place.)
Differences in boiling points, Rationalize the difference in boiling point between the members of the following pairs of substances:
Calculate how many milliliters of carbon dioxide would be produced theoretically from 20g of sucrose at 25 degrees Celsius and 1 atomosphere pressure.
What is the de Broglie wavelength of a 145 g baseball traveling at 30.0 m/s (67.1mph)? Is the wavelength much larger or smaller than the diameter of an atom .
Why does the absolute refractory period occur and What is happening in the cell.
A toothpaste contains 0.24% by mass of sodium fluoride used to prevent caries (cavities) and 0.30% by mass of triclosan (C12H7Cl3O2). A PRESERVATIVE + ANTIGINVITIS AGENT.
NH4CO2NH2(s)->2NH3(g) +CO2(g) (at equilibrium) starting with only the solid it is found at 40C the total gas pressure is 0.363 atm calculate equilibrium constant Kp
how could you use IR spectroscopy to identify which alkene is in which vial? How do you determine what the wavenumber values are for specific compounds/ elements?
If you have a sample of a gas at 25.0 oC and at a pressure of 4.5 atm, what will the pressure be if the temperature is raised to 50.0 oC?
What volume of .100 M NaCl is needed to react completely with 5.00mL of .200 M Pb(NO3)2.
If 12.5 g of iron(III) oxide (rust) are pro- duced from 8.74 g of iron, how much oxygen gas is needed for this reaction?
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