Other Chemistry Answers

Please predict the bond angles about the central atom in: Words to choose:bent,trigonometry planar,tetrahedral,trigonal bipyramidal,octahedral,0 non bonding pairs,1 non bonding pairs,2 non bonding pairs,109,5 degrees,120 degrees,180 degrees.Thanks.
. 4)CBr4:____Electron-domain geometry with_____on C.We confidently predict _____angles. 5)TeBr4:_____electron-domain geometry with_____on Te will cause the bond angles to deviate from ideal values.

Please predict the bond angles about the central atom in: Words to choose:bent,trigonometry planar,tetrahedral,trigonal bipyramidal,octahedral,0 non bonding pairs,1 non bonding pairs,2 non bonding pairs,109,5 degrees,120 degrees,180 degrees.Thanks

2)BCl3:______electron-domain geometry with ______on B .We confidently predict_____angles. 3)CH3I:______electrin-domain geometry with ____on C.Because the bonding electron domains are not exactly the same,we predict some deviation fro ideal _____ angles

Please predict the bond angles about the central atom in:
Words to choose:bent,trigonometry planar,tetrahedral,trigonal bipyramidal,octahedral,0 non bonding pairs,1 non bonding pairs,2 non bonding pairs,109,5 degrees,120 degrees,180 degrees.Thanks
1)H2S:______ electron-domain geometry with______on S will cause the bond angle to deviate from ideal ________ angles.

Which of the following is not a reason why some substances whose purity cannot be exactly known?
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A.they react with CO2 in air or moisture in air
B.because they are non-volatile.
C.they are highly hygroscopic
D.they react moisture in air

a) Iodine in potassium iodide, I3-, is allowed to distribute between water and carbon tetrachloride,CCl4. Write down the partition coefficient KD expression for this solvent extraction system. (2mks)
b) (i) Explain the principle behind liquid chromatographic separations. (3mks)
(ii) Differentiate between size exclusion chromatography and gel electrophoresis. (2mks)

24.3 grams of a metal was heated to 95.0°C and placed immediately into an insulated container containing 50.0 grams of water at 25.0°C. The final temperature of the water is 26.8 °C. What is the specific heat of the metal?

a 1.00 g sample of a metal x (that is known to form x+2 ions) was added to a 0.100cm3 of 0.500mol dm3 h2so4. after all the metal head reacted, the remaining acid required 33.40 cm3l of 0.500mol dm3 naoh solution for neutralization.calculate the molar mass of the metal and identify the element.

What temperature would a 2m water solution of CaCl 2 boil at? (5W) K 1 water is 52 BP water is 100 C AT b =(i)(k i )(m)

How many grams of oxygen are needed to combust 20.0 grams of propane?

Hydrogen gas (H 2 ) is reacted with nitrogen gas (N 2 ) in a long glass tube. Where would the reaction take place, in the middle, closer to the hydrogen source or closer to the nitrogen
source? Support your answer with a calculation.