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Which species is amphoteric? 1) HNO3(aq) 2) Cl-(g) 3) CO32-(aq) 4) HSO3-(aq) 5) PO43-(aq)
what quantity of heat is required to vaporize 107g of benzene, c6h6, at its boiling point, 80.1c? the heat of vaporization is +30.8kj/mol.
What is the pH of a solution obtained by adding 75.0mL of 0.366M CsOH to 250.0 ml Ba(OH)2 solution with a pH of 11.65.
If 860 liters of neon at 45°C and 800 mm. are decreased to 700 liters at the same pressure, what is the new temperature of this gas?
Which one of these equations describes a redox reaction?
Consider the malate dehydrogenase reaction from the citric acid cycle. Given the following concentrations, calculate the free energy change for this reaction at 37.0 °C (310 K). ?G°\' for the reaction is 29.7 kJ/mol. Assume that the reaction occur..
Cyclopentadiene is unstable because it rapidly undergoes a Diels-Alder reaction with itself. Carefully draw the structure of the product, showing stereochemistry clearly.
calculate the theoretical yield of c2h5cl when 140 g of c2h6 reacts with 234 g of cl2, assuming that c2h6 and cl2 react only to form c2h5cl and hcl.
Considering the mixture of the two compounds and range of the melting points, the reason recrystallization was difficult was due to a broad melting point range.
Explain this theary and how the shapes of simple molecules and polyatomic ions can be worked out using it. you will need to illustrate your account with a number of diagrams, in particular showing the difference typical shapes of simple molecules ..
If the sign contains neon at a pressure of 1.78 at 38, how many grams of neon are in the sign
Products is second order with a rate constant of 0.469 M-1s-1. If the initial concentration of A is 0.159 M, how many seconds would it take for the concentration of A to decrease to 5.12 * 10-3 mol/L?
A student separated the components of a 2.743 g sample of beach sand. The separation yielded 0.632 g sea salt, 0.456 g sea shells, and 1.352 g sand. (A) calculate the mass percent of each component in the original mixture. (B) Calculate the total ..
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