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Question- State the number of electron groups, lone pairs, and use VSEPR theory to determine the shape of the following molecules or ions.
1) Tetrahedral 2) pyramidal 3) bent
A. PF3
B. H2S
C. CCl4
D. PO43-
Write the number of electrons and also use VSEPR theory to explain the above problem
Explain if a solution containing .10 M Cl- , Br- , I- and (CrO4)2+ is treated with Ag+, in what order will the anions precipitate
Calculate the pH of a buffer solution made by mixing 34 ml of a 0.11 M potassium acetate solution with 63 ml of a 0.10M acetic acid solution. Give the pH to two decimal places.
Calculate the potential of a platinum electrode immersed in a solution that is prepared by mixing 25.00 mL of .0832M V\(V_{2}(SO_{4})_{3}\)
Predict the wavelength (in nm) of the lowest-energy electronic transition in the following polymethine ion:((CH_{3})_{2}N^{+}=CH-CH=CH-CH=CH-N(CH_{3})_2) Assme that all the C-C and C-N bond lengths equal
The ester ethyl p-nitrobenzoate is more reactive towards nucleophilic acyl substitution than ethyl p-methyoxybenzoate.
When aluminum crystalizes, it forms face-centered cubic cells. The atomic radius of an Al atom is 143. Caluculate the density of metallic aluminum.
Methane, CH4, burns in oxygen gas to form water and carbon dioxide. What is the correct balanced chemical equation for this reaction
How many grams of glucose (C6H12O6) must be dissolved in 563 gram of ethanol (C2H5OH) to prepare a 2.40 x 10-2 m solution?
The temperature in the room was 25.0 ºC. James was asked to transfer 4.50 mL of a liquid (density = 0.895 g/mL at 25.0 ºC) using a buret. He added the liquid into a 50-mL beaker weighing 25.789 g. He weighed the beaker with the liquid and found th..
The heat capacity of liquid water 4.18 J/g degree celcius and the molar heat of vaporization 40.7 kJ/mol. How many kilojoules of heat must be provided to convert 1.00 g of liquid water at 67 degree celcuis into 1.00 g of steam at 100 degrees celci..
4Au + 8KCN + O2 + 2 H2O --> 4 KAu(CN)2 + 4 KOH what is the minimum amount of KCN (in g) needed to react with 15.6 g of gold?
The concentration of cholesterol, glucose and urea in the blood as of a fasting individual are listed below in units of mg/100mL. Change these concentrations into units of mM.
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