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Problem- What is the change in enthalpy (in kJ) under standard conditions when 1.535 g of hydrogen is combusted?
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When an aqueous solution of sodium sulfite is added to an aqueous solution of hydrobromic acid, a gas evolves. Write the balanced chemical equation
if 100L of hydrogen gas at 20 atm and 259 k reacts with excess nitrogen,how many liters of NH3 at 500 k and 1 atm will form
A 494 mL sample of hydrogen gas was collected over water at 25°C and a pressure of 753 torr. If the pressure of water vapor is 24.0 torr at 25.0°C, what mass of hydrogen gas (g) was collected? Do not enter units with your answer.
calculate the molar mass of naphthalene, the organic compound in "mothballs," if a solution prepared by dissolving 5.00g of naphthalene in exactly 100g of benzene has a freezing point 2.00 degrees celcius below that of pure benzene.
What minimum mass of succimer (C4H6O4S2) (in mg) is needed to bind all of the lead in a patient's bloodstream? Assume that patient blood lead levels are 25 micrograms/deciliter.
Draw the chemical structure of a molecule of your design that meets all of the following requirements while also being chemically 'reasonable' ('reasonable' based on a general chemistry, Chem 110/112 knowledge of chemical structure and bonding).
Calculate the molar mass of a gas that has a density of 0.232 g/L at 156 oC and 222 torr. Use R = 0.0821 L-atm/mol-K for the value of the gas constant.
Draw the following molecule and its ring flipped conformer in the chair conformation on a sheet of paper: trans-1-chloro-2-methylcyclohexane
Construct a delta H and delta S table, including the four possibilities associated with the two possible signs for each of delta H and delta S. Discuss the resulting sign of delta G and the spontaneity of the process.
Sample containing three organic compounds: a hydrocarbon (RH), carboxylic acid (RCOOH), and an amine (RNH2, organic compound with acid-base properties similar tammonia).
If the value of Kc for the reaction is 2.50, what are the equilibrium concentrations of the products if the reaction mixture was initially 0.500 M SO2, 0.500 M NO2, 0.00500 M SO3, and 0.00500 M NO
As well, spectrum a shows significant peaks at m/z 85, 58, 57, as well as 43 while spectrum B shows peaks at m/z 71, 58, and 29. Allocate each compound its correct spectrum and identify the structures of the ions accountable for producing each of ..
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