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Two acid-base reactions are given below. Of the three reaction arrows presented in each reaction, select the arrow (via the multiple choice circle before it) that best indicates the acid-base equilibrium position
15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.496 M HNO2 (Ka for HNO2 = 4.0 × 10-4). What is the equilibrium concentration of NO2- ions?
A solution was prepared by dissolving 5.76g of KCL*MgCl2*6H2O (277.85g/mol) in sufficient water to give 2.000L
How do you determine the number of protons and neutrons in an atoms' nucleus and the number of electrons in its first and second shells?
Calculate expected final temperature for 25 grams of 70 C hot water melting 15 grams of 0 C ice. Repeat this calculation
The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 1.000-mg sample remains after 3.50 years?
Predict the relative reaction times with ethanolic AgNO3 for the following compounds and rank them from fastest to slowest: 2-chloro-2-butene, 1-chloro-2-butene, 2-chlorobutane.
Pure water, .120 m C6H12O6, .050 m LiBr and .050m Zn(NO3)2....which has the highest vapor pressure, highest boiling point and highest freezing point
methane flowing at 2 mol/min is adiabatically compressed from 300 K and 1 bar to 10 bar. What is the minimum work required? Use Departure Functions.
Provide a stepwise mechanism for the reaction, showing all electron movement using the curved arrow convention. Sketch a qualitative energy level diagram for the mechanism labeling all relevant points.
Determine how many milligrams of H 2 O are present in sample If the freezing point of 100.0 grams of sample of 2-methyl-2-propanol =24.59C, (2methyl-2propanol has Kf=4.68Ckg/mol
How many grams of silver and how many grams of chloride ions are in 1 L of solution?
Based on activation energies and energy changes and assuming that all collision factors are the same, answer the following questions: Which of the following reactions would be fastest in the forward direction
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