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State all of the allylic radicals and their resonance structures that are formed during the propagation step for the below reaction.
4-methyl-2-pentene with NBS/hv
Describe how a phospholipid differs from other fatty acids. How does this difference allow the formation of a bilayer in an aqueous medium
Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved. To find the mass of water use the density of water = 1.0 g/mL.
Which is the limiting reagent when 9 Ca atoms and 8 H3PO4 molecules react and produce 3 molecules of Ca3(PO4)2 and 9 molecules of H2?
A 25.0 mL sample of 0.400 M NH3(aq) is titrated with 0.400 M HCl(aq). What is the pH at the equivalence point. (Kb of NH3 = 1.8 ´ 10-5)
An ingot of copper with a mass of 48.00kg is drawn into a wire with a diameter of 0.8440cm. The density of the copper is 8.960 grams per cm3.
Sulfur in the air reacting with silver flatware to produce tarnish, or silver sulfide. What is the limiting and excess reagents?
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
Calculate the number of ATP molecules that are produced from the biological oxidation of one molecule of each of the following to CO2 and H2O
Draw a Lewis dot structure for the fictitious molecular ion [ZO2]-2. Assume that the central Z atom is bonded to each of the outer O atoms by a single bond. What is the formal charge on the Z atom
Calculate the molarity of each of the following solutions: (a) 29.0 g of ethanol (C2H5OH) in 545 mL of solution, (b) 15.4 g of sucrose (C12H22O11) in 74.0 mL of solution, (c) 9.00 g of sodium chloride (NaCl) in 86.4 mL of solution.
What mass of precipitate will form if 1.50 L of concentrated Pb(ClO3)2 is mixed with 0.850 L of 0.190 M NaI? Assume the reaction goes to completion.
Compute the concentration in molarity of an NaOH solution if 25 ml of solution is needed to neutralized 19.1 ml of 0.305 M HCl solution
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