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A 6.363 gram sample of a hydrocarbon is burned in a furnace and 19.966 grams of CO2 and 8.173 grams of H2O are collected. If the molecular weight of the compound is 168.31 grams/mole, what is the molecular formula
How many moles of water are formed when 50 mL of NaCl and 50 mL of NaOH are combined in a coffee cup calorimeter (molarity of solns= 0.1)
Draw a concentration cell for 0.10 M Cu2+ and 2.0 M Cu2+ cell, show the following on each compartment clearly. All the component of each cell, including the concentrations in anode and cathode half cells
Carbonate buffers are important in regulating the pH of blood at 7.40. If the carbonic acid concentration in a sample of blood is 0.0012 M, determine the bicarbonate ion concentration required
Write the cell notation for a voltaic cell with the following half-reactions Al(s) ? Al3+(aq) + 3e- 2H+(aq) + 2e- ? H2(g)
Dissolve an aluminum soft-drink can in an aqueous base. 2 Al (s) + 2 KOH (aq) + 6H20 (l)---> 2KAI(OH)4(aq) + 3H(g) If you place 2.05g of aluminum in a beaker with 185 mL of 1.35 M KOH, will any aluminum remain. What mass of KAI(OH)4 is produced
how could one be endothermic (positive delta H- NaNO3 dissolves in water) and one be exothermic (negative delta H- NaCH3COO dissolves in water)? Is there more to consider than just the dissolving process?
What would be an appropriate reaction mechanism for these two reactions? Including electron transfer arrows.
Calculate the spring constant of this silicone band including units. I know Hooke's law is F=-KX, where F is force, -K is the consent of the spring which I need to find and X is the displacement from relaxed position, but i'm giving the oscillatio..
There are 2.2 mg of lead in exactly 500 g of a water sample. What would the concentration of lead be in parts per million.
The bonding in benzene differs from that of other unsaturated hydrocarbons in that each carbon atom participates in: a. one single bond and on delocalized bond
What is the internal energy change for the system if 969 joules of heat flows into the system from the surroundings and 253 joules of work is done by the system on the surroundings
The sugar in deoxyribonucleic acid, DNA, is called 2-deoxy-D-ribose. This sugar has two stereocenters. 2-Deoxy-D-ribose has how many diastereomers
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