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Used in welding metals, the reaction of acetylene with oxygen has ^H0 = -1256.2kj: C2H2(g) + 5/2 O2(g) ---------H2O(g) + 2CO2(g)^H0 + -1256.2kj How much PV work is done in kilojoules and what is the value of ^E in kilojoules for the reaction of 6.50g of acetylene at atmospheric pressure if the volume change is -2.80L?
has a standard free-energy change of -4.00 kJ/mol at 25 °C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively
when a solution of cuii chloride cucl2 is added to a solution of potassium sulfide k2s a black precipitate of copper
a solution of ammonia and water contains 1.40times1025 water molecules and 5.30times1024 ammonia molecules. how many
A 50.0 mL glucose solution contains 3.00 g of glucose. What is the mass/volume percent of this solution
Find the heat transferred (in kJ) when 5.55 L of ethylene glycol (d = 1.11 g/mL) in a car radiator cools from 40.0°C to 25.3°C.
an electron is confined to a linear region with a length of the same orderas the diameter of an atom (about 100 pm)
what is the molarity of the oh- ions in 0.040 m barium hydroxide baoh2? i know the answer is .08m. the barium hydroxide
The normal melting points and boiling points of xenon are -112 deg. Celsius and -107 deg. Celsius, respectively. The Xe triple point is at -121 deg. Celsius and 282 torr, and its critical point is at 16.6 deg. C and 57.6 atm.
2.55 g of an unknown gas at 39 degrees celsius and 1.05 atm is stored in a 1.95-L flask. What is the density of the gas in L and the molar mass of the gas in g/mol
(b) What is the partial pressure in atm of each component of this mixture if it is held in a 13.70-L vessel at 12°C? O2 mixture of 5.10 g of O2, 7.44 g of N2, and 1.26 g of H2? atm N2 atm H2 atm
A steel tank has a volume of 438 liters and is filled with 0.885 kg of Oxygen. Calculate the pressure of oxygen at 21 degrees Celsius.
Calculate expected final temperature for 25 grams of 70 C hot water melting 15 grams of 0 C ice. Repeat this calculation
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