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What is the pH of a buffer that consists of 0.20 M NaH2PO4 and 0.40 M Na2HPO4? Ka = 6.2 × 10-8
A close chemical relative of the banned insecticide DDT is methoxychlor (C16H15Cl3O2). Methoxychlor is currently used as a home insecticide. Calculate the mass percent of oxygen in methoxychlor.
A 4.10 g nugget of pure gold absorbed 278 J of heat. What was the final temperature of the gold if the initial temperature was 25.0°C? The specific heat of gold is 0.129 J/(g·°C).
What are the other side products present in this biocatytic reaction? Name the principal enzymes taking part in this bioconversion. To which class of enzymes do they belong to?
How many grams of Fe2O3(s) are produced from 500.0 g of FeS2(s) and 400.0 g of oxygen gas?
HCL acid solution is standardized using 0.502g of sodium carbonate. Find the molarity of the acid if 30.5mL are required for the titration.
Calculate the rate at each time interval & average rate for the reaction and determine the rate of each time interval, and then calculate the average rate for the reaction in terms of [H 2 O].
How much heat is required to warm 219 g of ice from -45.7°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C
The first-order decomposition of SO2Cl2 to sulfur dioxide gas and chlorine gas at 320°C has a half-life of 8.75 hr. If one begins with 600. mmHg of pure SO2Cl2 in a 5.00-L flask at 320°C
Identify the oxidation-reduction reactions among the following: 1. Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)
Metals Covalently Bonded to Benzene, Specifically interested to know why you don't see metals bonded to benzene with a covalent sigma bond. I am not interested in metal benzene complexes.
Organic Chemistry Lab: Reduction and Spectroscopy, 1. Sketch the NMR spectrum you would expect to observe for the following compounds:
44.0 mL of 0.140 M and Na2SO4 and 25.0 mL of 0.160 M KCl Indicate the concentration of each ion present ?
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