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Question- The rate constant for this first order reaction is .830 s -1 at 400 C. How long in seconds would it take for the concentration of A to decrease from .690 M to .370M?
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A tanker truck carrying 2.01×10^3 kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuric acid solution is 95.0% H_2SO_4 by mass and has a density of 1.84 g/L. Sodium carbonate Na_2CO_3) is used to neutralize the sulf..
Sparkling wine is bottled under a CO2 pressure of 4.1 atm. The solubility of CO2 at 4.1 atm is 0.70 g/100 g H2O. What is its solubility after the bottle is opened if the partial pressure of CO2 is 3.4x 10-4 atm
If the partial pressure of helium is the same as the partial pressure of oxygen, what do you know about the number of helium atoms compared to the number of oxygen molecules? explain.
Explain why does the saponification of esters under basic conditions require a full equivalent of hydroxide and not a catalytic amount
An electrical heater warms 180 g of water.its initial tempearture is 35,0 C the heater emits 200J of heat each 1 minute. heat capasity of water is 4,18 J/(k.g). what is the new tempearture of the water after 5 minutes of heating
Question- Calculate the pH of a solution made by mixing equal volumes of a solution of NaOH with a pH of 11.40 and a solution of KOH with a pH of 10.30. Assume the volumes are additive.
A student during an extraction experiment lost track of whether a beaker contained an aqueous solution or an organic solution. How could the student determine which type of solutions was in the beaker by a simple test
hydrocarbon produced 24.8 g of CO2 and 8.44 g of H2O. What is the empirical formula for the hydrocarbon?
A water desalination plant is set up near a salt marsh containing water that is 0.10 M NaCl. Compute the minimum pressure that must be applied at 20.C to purify the water by reserve osmosis. Assume NaCl is completely dissociated.
The equilibrium constant for the reaction Ni(s) + 4CO(g) ? Ni(CO)4(g) is 5.0 × 104 at 25°C. What is the equilibrium constant for the reaction Ni(CO)4(g) Ni(s) + 4CO(g)? A) 2.0 × 10-5 B) 2.5 × 109 C) 5.0 × 104 D) 5.0 × 10-4 E) 2.0 × 10-3
Consider the reaction 2NH3 + CH3OH → products .How much NH3 is needed to react exactly with 21 grams of CH3OH?
Calculate the reversible work required to transport 1mol of K+ from a region where CK+=5.25 mM to a region where CK+=35.5 mM if the potential change accompanying this movement is ?f = 0.055 V. Assume T = 298 K.
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