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A .1075 g sample of an unknown acid was titrated with a .09441 M NaOH solution. The end point was reached at 20.67 mL of base. Find molar mass if: monoprotic, diprotic, triprotic.
Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. How many ozone molecules are present in 1.00 L of air under the stratospheric ozone conditions of 227 K temperature and 1.89 * 10^-3 atm pressure
Identify each of the following substances as ionic, polar covalent, or nonpolar covalent. Also predict its solubility in water. 1. Calcium chloride (CaCl2) 2. Pentane (C5H12) 3.Methyl alcohol (CH3OH)
If the CO2 and O2 in the above reaction are measured at the same temperature and pressure, 1. How many milliliters of O2 are produced per minute. At what rate is the Na2O2 consumed, in grams per hour
calculate the amount of 0.020 m kmno4 solution required to completely oxidize 37.99 ml of .100 m feso4 in an acidic
a swimming pool 20.0 m ? 12.5 m is filled with water to a depth of 3.71 m. if the initial temperature of the water is
This is for two dimensional arrays with both positive and negations ions alternating in a square pattern. I am given the hint to select an area with boundries through the middle of the outermost ions-ie the edge ions count as 1/2
Write net Brønsted equations that show the acidic or basic nature of the following substances, given the pH.
Ethanol (C2H5OH) has a normal boiling point of 78.4 OC. Estimate Suniverse at this 50.0 OC for the process: C2H5OH (l) ? C2H5OH (g).
what is the total volume occupied by the metal and the water in the graduated cylinder? 2.How could the density of a substance that was soluble in water, be determined?
Following the instruction for the standardization of sodium hydroxide a student took 3.5 gms of KHP (MWt 204.2g/mol) and titrated the solution formed with the given sodium hydroxide solution.
given the unbalanced equation ag2co3 yeild ag o2 co2 how many moles can be produced from 2.5 moles of ag2co3in a
At a particular temperature, Kp = 0.25 atm for the reaction N2O4(g) 2NO2(g) a. A flask containing only N2O4 at an initial pressure of 4.5 atm
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