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How many moles of zinc reacted with the 6M HCl in the second part of the experiment? To find the moles of zinc you need to convert from the grams of zinc to the moles of zinc using the following calculation: moles of Zn = g of zinc * (1 mol Zn/molecular weight of Zn)
An unkown metal crytallizes in one of the three cubic lattices.The edge length of the unit cell is 408pm.Given that the atomic radius of the metal is 144pm and the density of the solid is 19.3g/cm-3, what is the atomic symbol of the metal? a=2R a=..
The standard enthalpies of combustion for ethanol and dimethyl ether are -1367kJ mol-1 and -1460kJ mol-1, respectively, at 298K. what is delta U at 298K for the purposes below:
How much heat is evolved in converting 1.00 mol of steam at 160.0C to ice at -45.0C? The heat capacity of steam is 2.01 J/(g??C) and of ice is 2.09 J/(g??C).
calcium carbonate or limestone is relatively insoluble in water. at 25?c only 5.8 mg will dissolve in 1.0 liter of
A sample of a radioisotope shows an activity of 999 disintegrations per minute due to beta decay. If after 1.10 years the activity is 952 disintegrations per minute, what is the half-life of this radioisotope
What is the proper name of the intramolecular reactions that occur in amino acids to form Zwitterions?
Calculating the Equivalent Weight of an Unknown Substance, An unknown organic carboxylic acid, mp = 139-141 degrees Celsius, is burned with a yellow, sooty flame. The sodium fusion test showed that nitrogen was present.
Draw structural formulas for the alkoxide ion and the alkyl(aryl)bromide that may be used in a Williamson synthesis of the ether shown. ch3-0-chch3 with a ch3 off of the second carbon from the right Draw both structures in the single sketchpad.
Aluminum foil measure 23.5 cm x 19.7 cm which it's mass is 2.66grams, explain what is the thickness of this aluminum foil
Then 41.44 g of water, with an initial temp of 76.9 degrees celcius, was added to the calorimeter. The final temperature of the water in the calorimeter was 22.9 degrees celcius. what is the heat capacity of the calorimeter
would the calculated value of k the true rate constant be in error if the concentration of dye was actually doubled the
Compound A, C12H22O, undergoes reaction with dilute H2SO4 at 25 °C to give a mixture of two alkenes, C12H20. The major alkene product, B, gives only cyclohexanone after ozone treatment followed by reduction with zinc in acetic acid. Draw the struc..
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