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What is a sigma bond? What is a pi bond? Must a double bond have a sigma bond and a pi bond? Explain.
A 0.15 M solution of chloroacetic acid has a pH of 1.86 What is the value of Ka for this acid
Describe the basic unit processes involved in IC fabrication and the sequences in which they are performed to yield products.
As a technician in a large pharmaceutical research firm, you need to produce 300. of 1.00 potassium phosphate buffer solution of = 7.11. The of is 7.21. You have the following supplies: 2.00 of 1.00 stock solution
Based on the experimental results obtained, define why each of the reactions yielded the product distribution you observed. Depict the stepwise reaction mechanism
1. the decomposition of hcooh follows first-order kinetics.hco2hg -gt nbspco2g h2g how many seconds will it take for a
Define the following reaction in a closed reaction flask. If 1.50 atm of gas A is allowed to react with 0.500 atm of gas B as well as the reaction goes to completion at constant temperature and volume, explain what is the total pressure in the rea..
Use the standard reduction potentials to find the equilibrium constant for the following reaction at 25 degree Celcius:
Calculate the amount of heat required to completely sublime (turn from solid to gas) 25.0 g of solid dry ice (CO2) at its sublimation temperature. (the heat of sublimation is 32.3 kJ/mol)
Problem- Molar nuclear mass of c-14 is 14.003241 g/mol/. The molar mass of a proton is 1.007825 g/mol. The molar mass of a neutron is 1.008665 g/mol. Calculate the binding energy (j/mol) of C-14.
Estimate Keq for the following equilibria at 425 K. Note that H2O is present as a gas rather than as a liquid. R = 8.3149 J/(mol*K).
Find the entropy change of the system and of the surroundings if 3.000mole of water freezes reversibly at 1.000atm. the freezing temperature is 0.00C at this pressure, and the specific enthalpy change of fusion is equal to 79.7cal/gm at this tempe..
The phosphate of a metal has the formula MPO4. The formula of its nitrate will be.
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