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In writing a lab report, a hypothesis is needed. The experiment called for a titration HCl solution of unknown molarity with TRIS base. Bromocresol green was used as an indicator.
The decomposition of hydrogen peroxide is a first-order process with a rate constant of 1.06 x 10-3 min- 1. How long will it take for the concentration
Sunlight causes the following reaction to take place in the atmosphere: NO2(g) NO(g) + O(g). Calculate the standard enthalpy of the reaction from the following information and from additional information in Appendix 2A
Briefly explain why precipitates are usually rinsed with distilled water before they are tested further
The reaction between zinc bromide and silver nitrate
Draw the LUMO Huckel MO for the cation 1, 3, 5-heptatriene (carbocation is carbon 7). Also, please state the number of pi electrons in this conjugate system
25.75 mL NaOh solution was used to titrate 20.00 ml of 0.4992 M oxalic acid solution. What is the molarity of NaOH solution
A solution consists of 3.88 g benzene,C6H6 , and 2.45 g toluene ,C6H5CH3. The vapor pressure of pure benzene at 20. °C is 75 mm Hg and that of toluene at 20.0 °C is 22 mm Hg.
Use molar volume to solve each of the following at STP: a) the volume (L) occupied by 2.50 mol of N2; b) the volume (mL) occupied by 0.420 mol of He; c) the number of grams of neon contained in 11.2 L of Ne gas; d) the number of moles of H2 in 162..
exhales 30.0 times per minute, that the exhaled air is at a pressure of 1.00 atm, and that the air behaves as an ideal gas. Calculate the time in hours before a fire fighter using such an air tank runs out of air.
Draw the hydrogen on the chiral center. Make sure you indicate the chiral center through stereo wedges (as in the following example), and that there are no other bonds between the two bonds drawn with the stereo wedges.
Hydrocyanic acid (HCN) is a weak acid with Ka = 4.9 x 10-10. The pH of a solution that contains equal numbers of moles of HCN and KCN is closest to
How much energy is required to vaporize 48.7 g of dichloromethane (CH2Cl2) at its boiling point, if its Hvap is 31.6 kJ/mol
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