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Choose the answer in which the oxides are arranged in order of increasing acidity (least acidic compound listed first).
Draw Lewis dot structures for each of the following molecules.
The rate constant of a reaction is 2.6*10-3s^-1 at 25 c, and the activation energy is 33.6kJ/mol. What is k at
A student heats 5.128 g sodium bicarbonate to completely decompose the sample to sodium carbonate. 3.2349 g of sodium carbonate was produced. Calculate the atom economy of this reaction.
If the enthalpy change for the reaction is 21 kJ/mol, what is the minimum value of the change in entropy for the reaction. Please answer in J/K* mol
Determine the mass of lithium hydroxide producecd when 0.38 g of lithium nitride reacts with water according to the follow equation: Li3N + 3H2O equals NH3 + 3LiOH
Nitrogen and hydrogen gases react to form ammonia gas. N2(g) + 3 H2(g) 2 NH3(g) At a certain temperature and pressure 1.4 L of N2 reacts with 4.2 L of H2. If all the N2 and H2 are consumed, what volume of NH3, at the same temperature and pressure,..
At what temperature will a 1.3 g sample of neon gas exert a pressure of 491 torr in a 5.9 L container?
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation). a. pH = 8.7 for 0.010 M RNH2 (weak base)
If the initial concentration of A=2.5 mol/L, the initial [B]=1.4 mol/L, and the rate =0.29 moles of product per liter per minute (M/min). Calculate the rate constant K to 2 decimal places.
You heat the gas until the root mean square speed of the molecules of the sample has been doubled. What will be the final pressure of the gas
Write a balanced net ionic equation for the neutralization of equal molar amounts of nitric acid and methyl amine (CH3NH2). Indicate whether the pH after neutralization is greater than, equal to, or less than 7.
Hemoglobin has a positive charge of +5 and a radius of 3.55 nm in water. How far will the protein travel in one hour in an electrophoresis gel at 25C when a field of 1.0 V cm^-1 is applied if the viscosity of the gel is 0.891 cP
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