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1. boron-fluorine single bonds are approximately 1.52A(152pm) in length. in BF3, the bond lengths are 1.30A. propose an explanation for this discrepancy, making use of resonance structures to illustrate your answer.
2. BF3 is often sold as a complex with dimethyl sulfide, CH3SCH3. Draw Lewis dot structure for dimethy sulfide, and for the BF3 CH3SCH3 complex, showing formal charges where appropriate Identify the Lewis acid and Lewis Base in the interaction
3. Would you expect theboron-fluorine in theBF3 CH3SCH3 complex to be longer or shorter than those in "free"(uncomplexed)BF3? explain your answer
if 9.0L of NO are reacted with excess O2 at STP, what is the volume in liters of the NO2 produced?
CaC2 + 2H2O --> C2H2 + Ca(OH)2. Using this equation, determine how many moles of CaC2 are needed to react completely with 49 g H2O.
A mixture of gases contains 8.10 g of N2, 1.90 g of H2, and 3.50 g of NH3. If the total pressure of the mixture is 2.60 atm, what is the partial pressure of each component?
B)if water is added to 150ml of a 1.2M KCL solutionuntil the volume is 150 ml what is the new molarity?
Explain Coronary Artery Disease: Good and Bad Cholesterol, A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease.
what is the flow of the gulf stream in milliters per minute (b) what mass of water in the gulf stream flows past a given point in 24 hours? the density of seawater is 1.025 g/ml
The freezing point (Tf) for t-butanol is 25.50°C and Kf is 9.1°C/m. Usually t-butanol absorbs water on exposure to the air. If the freezing point of a 9.2-g sample of t-butanol is measured as 24.59°C, how many grams of water are present in the sam..
When 2.5000g of NaOH were dissolved in 49.0g water in a calorimeter at 24.0C, the temperature of the solution went up to 37.1C.
The explosive, TNT, is composed of 37.0% carbon, 2.2% hydrogen, 18.5% nitrogen and the rest oxygen. if the molar mass of TNT is 227 g/mol, what is the empirical and molecular formula for TNT?
What is the pH of concentrated sodium hydroxide? NaOH FW=40.0 g/mol
A sample of pure (1 chloroethyl) benzene had a specific rotation of 87.2 degrees, while pure R 1 chloro-1-phenyl ethane has a specific rotation of -109 degrees. This sample was reacted with excess ammonia in diethyl ether at 0 c.
A diamond weighs 5.35 ounces. How much is it worth if the going price of diamonds is 627 dollars per carat? 1 carat is equal to 200 milligrams
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