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Construct the Lewis structure model for the covalent compound hydrogen sulfide using the following steps.
1) The total number of valence electrons in the two hydrogen atoms is _____; the sulfur atom has _____. Hence, the total number of valence electrons in the compound is _____.
2) Write the atomic cores for the hydrogen atoms and the sulfur atom in the space below. Because sulfur is the central atom in this molecule, arrange the cores so that the hydrogen atoms are on either side of the sulfur atom.
3) Rewrite the atomic cores in the space below. Place an electron pair between each hydrogen atom and the sulfur atom.
4) Write the lewis structure for hydrogen sulfide in the box, distirbuting the remaining valence electrons so that the hydrogen atoms are in accordance with the duet rule and the sulfur atom is in accordance with the octet rule.
A fish tank holds 30.0 gal of water. Using a density of 1.0 g/mL for water, determine the number of pounds of water in the fish tank.
Consider the titration of a 25.0 mL sample of .125M RbOH with .105M HCl. Find the initial pH.
Co(H2O)62+(aq)+4Cl?(aq), which interconverts the blue CoCl42? ion and the pink Co(H2O)62+ ion. Will the equilibrium concentration of CoCl42? increase or decrease when the following changes occur?
Consider all the valence electron pairs of the central atom-both those that are shared in covalent bonds, called bonding pairs, and those that are unshared, called non-bonding pairs or unshared pairs.
if 9.0L of NO are reacted with excess O2 at STP, what is the volume in liters of the NO2 produced?
In a reaction between pure acetic acid and sodium bicarbonate, 26.6 grams of sodium bicarbonate was added to 12.0 mL of acetic acid. Which reactant is the limiting reactant in this reaction
The Ksp value for the dissociation of barium nitrate is 0.00464. The molar solubility of barium nitrate is consequently 0.105 M. If the concentration of the barium ion in a saturated solution of barium nitrate was raised to 0.178 M (this is not th..
A 70.0 g steam sample at 150.0 degree Celsius was converted to ice at -150.0 degree Celsius, calculate the total amount of heat removed in the process.
Write the equation for the reaction that occurs when Zn is placed in a 1M HCl solution, and determine the net EMF for the reaction.
Choose one of the iron-sulfur electron transfer proteins described in the text. Please draw the structure of the iron-sulfur active site, indicating the amino acids tethering the FeS core to the protein
An aqueous solution is 35 % by mass methylamine (CH3NH2) and has a density of 0.85 g/cm3. What is the pH of the resulting solution if 50 mL of this solution is diluted
arrange the following alkenes in order of increasing heat of hydrogenation (That is, heat released when the compound is hydrogenated). 1 = lowest heat,...................5=highest heat
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