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In which series are the carbon-carbon bond lengths arranged in the correct order from shortest to longest?
a. Benzene
b. cyclohexane
c. Cyclohexane
d. ethylene
e. ethylene
The enthalpy change at 25C and 1 atm for the complete burning of 1 mol of acetone in oxygen to give CO2(g) and H2O(l) is -1791kJ. Calculate the standard enthalpy of formation of acetone.
If 329 g water at 65.7°C loses 9730 J of heat, what is the final temperature of the water?
What reagent could be used to reduce both the nitro and ketone functional groups in a single reaction?
The mass of an electron is 9.11\times 10^{-31}~\rm kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31\times 10^{-10}~\rm m, how fast is the electron moving relative to the speed of light? The speed of light is 3.00\times10..
Some compounds sublime in the capillary and some decompose before melting. How do you determine melting point of these compounds
Every antacid contains one or more ingredients capable of reacting with excess stomach acid (HCl). The essential neutralization products are CO2 and/or H2O. Write net ionic equations to represent the neutralizing action of the following popular an..
A Scientist uses an ultra-high vacuum chamber that has a pressure of 6.5x 10^-12 torr. If the temperature is 298 K, how many molecules are there in 2.0 cm^3? What is the molar volume
25.0 ml of a 0.2450 M NH4Cl solution is added to 55.5ml of 0.1655 M FeCl3. What is H concentration of chloride ion in the final solution.
write balanced reaction equations for the reactions involved a) when aspirin dissolves in aqueous NaHCO3 and b) when aspirin is precipitated from a sodium acetylsalicylate solution by HCl.
What is the molarity (M) of a solution that contains 2.08 grams of NaOH (MM = 40.00 g/mol) in 79.65 mL of solution.
the enthalpy of formation of compound x is -612 kjmol and the sole product of its combustion has a enthalpy of
What is the pH of a 2:1 mixture of H2PO4- to HPO42- at 0.005 M ionic strength. (See the table for the activity coefficients.)
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