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When 5.00 g of butane, C4H10 (g), burns in oxygen, 247 kJ of heat are released. What is ΔH for the following thermochemical equation?
2 C4H10 (g) + 13 O2 (g) → 8 CO2 (g) + 10 H2O
If 2.00 moles of acetylene react completely with sufficient oxygen, how many grams of carbon dioxide are produced?
How much heat is required to convert 47 g of ethanol at 36 degrees Celsius to vapor phase at 78 degrees Celsius?
A solution is made by combining 10.0mL of 17.5M acetic acid with 5.50g of sodium acetate and diluting to a total volume of 1.50L
A gas is confined to a cylinder under constant atmospheric pressure. When 419 J of heat is added to the gas, it expands and does 103 J of work on the surroundings. What is the value of delta H for this process? And what is the value of delta E for..
when metabolized an orange provides 445 kj of energy. what mass of water could this amount of energy raise from 25.0
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
Part A: Use the molar volume of a gas at STP to determine the volume (in L) occupied by 12.7 g of neon at STP.
The buret continues to drain, slowing gradually until coming to a complete stop, as depicted on the right side. At that moment, the total pressure of the gases inside the flask just equals the total pressure of the atmosphere plus the additional p..
A 309 mL sample of unknown HCl solution reacts completely with Na_2CO_3 to form 10.1 g CO_2. What was the concentration of the HCl solution?
Calculate the weight percent composition of the mixture, using the same assumptions as in part A.
a spherical balloon containing 5.035 mg of hydrogen gas in its standard state of aggregation behaving ideally is
in the old definition of standard state stp corresponded to conditions of standard temperature t0degc and standard
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