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write the two resonance hybrids for the carbocation that would be formed by protonation at C-1 of 2-methyl-1,3-pentadiene. Without doing a calculation, would you expect C-2 or C-4 (the two end carbons of the allylic cation) to have the most positive charge on it?
How many milliliters of a stock solution of 10.0 M HNO_3 would you have to use to prepare 0.320 L of 0.550 M HNO_3?
nonionic solute in 50.0g of water. The solution freezes at -0.1455 degrees C. what is the molar mass of the solute?
How many silver atoms can be produced if 0.00350g of Cu are reacted with excess AgNO3, according to the equation :Cu + 2AgNO3 yields 2Ag + Cu(NO3)2
A student combusts 504.96 grams of ethene gas, C2H4. How many liters of CO2 (g) are produced at a pressure of 0.993 atm and a temperature of 295 K? C2H4 (g) + 3 O2 (g) ->2 CO2 (g) + 2 H2O (g)
What is the pH when 100 mL of 0.1 M HCl is titrated with 50 mL of 0.2 M NaOH?
At the start of the experiment, both thermometers record the same temperature. Why does, after 10 min, thermometer B record a lower temperature than thermometer A?
a chemical reaction release 1240 J of energy. the energy is all absorbed by water (423 g) containing the reactants. if water was initially at 19.6 degrees, what will be it final temperature
A gaseous mixture of O2 and N2 contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 805 mmHg ?
Calculate the energy and wavelength associated with an a particle that has fallen through a potential difference of 4.0 V.
how many grams of iron will react with water to form iron (III)oxide and 85 liters of hydrogen gas at 19 degrees celsius & 525 torr?
It takes 50.0J to raise the temperature of an 12.0g piece of unknown metal from 13.0 C to 24.0 C. What is the specific heat for the metal?
A flexible container contains 1.50 L of gas at 25 degrees Celcius. What is the new volume when the container is heated to 100 degrees Celcius?
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