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Consider the following reaction at equilibrium. What effect will increasing the volume of the reaction mixture have on the system?
2 H2S(g) + 3 O2(g) 2 H2O(g) + 2 SO2(g)Answer
The equilibrium constant will decrease.
The equilibrium constant will increase.
The reaction will shift to the right in the direction of products.
No effect will be observed.
The reaction will shift to the left in the direction of reactants.
Suppose that after delivery several drops of the water cling to the inner wall of the pipette (because the pipette is dirty). How does this technique error affect the reported density of water?
What mass (in grams) of this substance must evaporate to freeze 200g of water initially at 15 degrees C? (The heat of fusion of water is 334 J/g; the specific heat of water is 4.18 J/g-K.)
A scuba diver 40 ft below the ocean surface inhales 50.0 mL of compressed air mixture in a scuba tank at a pressure of 3.00 atm and a temperature of 8 degrees C
Treatment of ammonia with phenol in the presence of hypochlorite yields indophenol, a blue product absorbing light at 625 nm, which can be used for the spectrophotometric determination of ammonia.
1.464 g of an unknown hydrocarbon (112.6 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter,Cv, = 5.234 kJ/ºC and ?T =5.744 ºC. Find ?E for this hydrocarbon in kJ/mol.
Methanol burns in air according to the equation below. How many grams of methanol can be burned by 10 grams of oxygen?
A buffer solution is prepared by adding 15.00 g of sodium acetate ( NaC2H3O2) and 12.50 g of acetic acid to enough water to make 500 mL of solution.
What types of limitations and obstacles must any plausible origin of life scenario overcome, and why did Crick believe life couldn't have formed on Earth?
An iron ore sample is a mixture of Fe2O3 and several impurities. A 752. g sample of the impure iron ore is heated with excess carbon. Only the Fe2O3 present in the ore reacts with the carbon producing 341. g of carbon monoxide by the following rea..
In a 0.34 M solution of sodium acetate, what concentration of hydronium ions comes from the self-ionization of water? pKb for acetate anion is 9.246
An unknown element crystallizes in a body-center cubic crystal structure. The atomic radius of the substance is 2.532 Å and its density is 1.208 g/cm3.
Which step is the rate determining step on a reaction?
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