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A blood sample has an [H3O+]= 4.6 x 10^-8. Show how to determine (and then calculate) the pH, pOH, and [OH-] of this blood sample. In addition, determine if this blood sample is acidic, neutral, or basic and indicate if the pH of this sample is within the normal range for blood.
A solution containing 0.0837 M caffeine and 0.0666 M niacin as the internal standard gave R = 423 and R = 347. To analyze a caffeine tablet, 20.0 mL caff niacin 0.146 M niacin and 20.0 mL of caffeine tablet solution were mixed
If 400. mL of NO at STP is reacted with 500. mL of O2 at STP, calculate the partial presure of NO2 after the reaction goes to completion. Assume constant volume.
the vapor pressure of ch3 coch3 propanone or acetone is 67 torr at 0 ? c and 222 torr at 25 ?c. what is the standard
Calculate the weight percent composition of the mixture (hexane, heptanes, hexanol, and toluene). b. Calculate the mole percent composition of the mixture.
Seawater has a concentration of 400 ppm Ca. You wil first prepare a 10-fold diluted Buzzards Bay seawater solution (40.0 ppm Ca). Pipet 10.00 mL of Buzzards bay seawater into a 100.0 mL volumetric flask and fill to mark with deionized water
A solution of ammonia and water contains 2.70×1025 water molecules and 8.50×1024 ammonia molecules. How many total hydrogen atoms are in this solution
What is the longest wavelength (in nm) that can dissociate a molecule of H-I? in nm.
You heat the gas until the root mean square speed of the molecules of the sample has been doubled. What will be the final pressure of the gas
Chromium crystallizes in a body-centered cubic lattice (the Cr atoms are at the lattice points only). If the density of the metal is 7.19 g/cm3, what is the unit cell edge length in pm?
solution is titrated with a solution of NaOH. 23.10mL of the NaOH solution is required to titrate the HCl. Calculate the molarity of the NaOH solution.
Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 2.84 g of sodium and 4.37 g of chlorine
what is the purpose of the anhydrous cacl2? the important that none of the solid cacl2 be included in the final distillation of 1-bromobutane.
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