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The standard enthalpy of reaction, DH°rxn for C2H2(g) + 2 H2(g) ® C2H6(g) is -311.5 kJ mol-1. Determine the value of DE°rxn for this reaction. Q 2 options: 1) -306.5 kJ mol-1 2) -309.0 kJ mol-1 3) -314.0 kJ mol-1 4) -316.46 kJ mol-1 5) +4646 kJ mol-1
Using the list of Active Ingredients provided, was there enough HCl added to completely neutralize the Naproxen Sodium? (Show ALL calculations below)
Calculate the value of E°cell for a voltaic cell described in each of the following. Enter your answer with 3 significant digits. Enter scientific notation as 1.23E4
Order the four subshells with in a single shell from lowest to highest energy.
How many grams of commercial acetic acid (97% by mass) must be allowed to react with an excess of to produce 83 of acetyl chloride , if the reaction has a 81.2 yield?
RbNO3 Express your answers as ions separated by a comma. If the compound is not soluble, enter noreaction
The pH of a lake that has a volume of 2.4*10^4 liters has a pH of 4.5. Calculate the mass of Calcium Carbonate (CaCO3) that must be added to the lake water in order
List all compounds that are present when reaction is complete. C) Determine the theoretical yield of H3PO4 based on the starting materials and D) Determine the mass, in grams, of each compound present when the reaction is complete
A student heated 1.0L of ethanol (density 0.789 g/L) with 1.0 mL ethanoic acid (density 1.049 g/mL) with a sulfiric acid catalyst and noticed a vinegar-like smell to the product as well as a fruity medicinal smell.
How many moles of PbI2 are formed? What is the concentration of KNO3? What is the remaining concentration of the reactant that was in excess?
iron has a density of 7.874. gcm3. what is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000
Ethane is burned with 20% excess air in a furnace operating at a pressure of 100 kPa. Assume complete combustion occurs. Determine the dew point temperature of the flue gas.
what is the volume of 340. ml of a sample of gas at 55.0degc and 740. mm hg if the conditions are adjusted to stp?
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