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(a) Methane (CH4) and the perchlorate ion (ClO4-) are both described as tetrahedral. What does this indicate about their bond angles?
(b) The NH3 molecule is trigonal pyramidal, while BF3 is trigonal planar.Which of these molecules is flat?
Write the condensed electron configurations for the Pt atom. Express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. For example, should be entered as [He]2s^22p^2.
An unknown element forms a yellow ion, XO . It forms a precipitate with silver ions. If 48.0 mL of a 0.250 mol/L solution of silver ions is added to a solution of the unknown ion, 1.856g of a red-brown precipitate are formed. Determine the iden..
Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 5.3 g of iron are to be dissolved in 1.7 M HCl. What is the minimum volume (in mL) of the acid solution required to react with all of the iron
Describe the possible effect on your results of the following experimental errors. In each case, specify the component(s) whose percentage(s) would be too high or too low.
sodium azide, a compound containing only sodium (Na) and Nitrogen (N), is used as a propellant for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible.
The density of air at ordinary atmospheric pressure and 25 degrees C is 1.19 g/L. What is the mass, in kilograms, of the air in a room that measures 10.0 X 13.5 X 10ft
Calculate the mass of nitrogen dissolved at room temperature in an 99.0 mL home aquarium. Assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78.
Draw a titration curve for both of these peptides. Be sure to label the axes properly, indicate the pKa values, the equivalence points and the buffering regions
calculate the theoretical yield of isopentyl acetate that canbe made from 20.0g isopentyl alcohol and 25.0g acetic
At 25 oC, experiment shows that the total pressure of the gases in equilibrium with the solid is 0.116 atm. What is the equilibrium constant Kp and Kc?
Dr. Goodchem observed that he had extracted 15.5 mL of Citral. If the density of pure Citral is 0.888 g/mL, what was the % composition of Citral found in the Orange extract.
what is the difference between dipole or nonpolar molecular? what is the bond angles of a triagonal piramidal a bent
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