A 25.0 mL sample of a 0.3400 M solution of aqueous trimethylamine is titrated with a 0.4250 M solution of HCl. Calculate the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added; pKb of (CH3)3N = 4.19 at 25°C.

The 9 species are to be separated based on their differences in volatility, primarily using distillation columns.(benzene,p-xylene, toluene, ethylene, cumene, hydrogen, methane , ethane, propane , propyl) rank the species from most volatile (#1) to least volatile (#9), and what is the physical properties used to make this determination.

Which of the following statements is true?

Fast reactions have small rate constants.

Slow reactions have large rate constants.

A rate equation contains concentration terms for all reactants involved in a one-step mechanism.

A rate equation contains concentration terms for all the reactants involved in a multi-step reaction.

calculate the thermodynamic favorability of aerobic Mn(II) oxidation and aerobic Fe(II) oxidation at pH 2 and 7? Would an organism grow from these processes?

Show all work and don't use previous answers similar to this because they aren't correct. Thanks.

. During the preparation of your dish(chocolate pudding, pasta, bread), the chemical composition of each ingredient plays a role in the texture, aroma and appearance of the final product. Use the table below to describe the chemical composition (molecules, elements, ions, etc.) for the basket ingredients and its corresponding chemical changes and/or physical changes occurring while cooking.  

A)assuming volumes are additive, what volume of water must be added to 28.0 mL of 1.25 M FeCl3 to prepare a 0.650 M FeCl3 solution?
B) what mass of Ca(OH)2 would be required to neutralize 120.0 mL of 0.350 M HClO4? molar mass= Ca(OH)2 74.08; HClO4 100.46
C) what is the minimum volume of 0.08475 M KOH needed to neutralize 10.00 mL of 0.1801 M H2C2O4?
D) a 10.0 L sample of an ideal gas at 25.0°C is heated at constant pressure until the volume has doubled. what is the final temp?

Which Relative Risk (RR) and confidence interval (CI) is most likely to be a causal relationship?

A) RR= 3.0 (95% CI 1.9-7.9)

B) RR= 3.0 (95% CI 0.3-12.2)

C) RR= 1.0 (95% CI 0.3-12.2)

D) RR= 1.0 (95% CI 0.3-4.3)

Part 1: Calculate the solubility (in M) of cobalt(II) hydroxide, Co(OH)2(s) in H2O. Ksp = 2.80×10-16 at a specific temperature

Part 2; What is the pH of this solution of cobalt(II) hydroxide?

Identify the single most acidic or basic principle species in each of the following solutions. Calculate its molarity or number of moles (your choice). In the case of any species other than H3O+ or OH-, write the net ionic equation for the reaction of that speicies with water. Calculate the pH of each solution.

a) 10.0 mL of 0.30 M HCL

b) 10.0 mL of 0.35 M HF

c) 10.0 mL of 0.25 KOH

d) 15.0 mL of 0.30 M NaOH

e) 15.0 mL of 0.20 M NH3

At 200°C, Kc​ = 1.6*10−10 for: N2​O(g) + NO2(g) ⇌ 3 NO(g). If 350 mL of NO measured at 797 torr and 25.0°C is placed into a 3.00 L container, what will be the molarity of N2​O at equilibrium when the reaction is heated to 200°C? what is the total equilibrium pressure, in units of torr at 200°C?

Use hand drawn pictures to describe your understanding of colligative properties of solutions at the particulate level. You should use each molecule drawn to represent 0.01 mol of that substance. You should be sure to include all components of your understanding in the representation. The molecules you are required to include in your explanation are glucose, magnesium chloride, aluminum sulfate. Make sure you have appropriate atom/molecule size. Note: You should be sure to include those components like concentration, effects on vapor pressure, effects on the algorithmic (mathematical process) problem solving solution, and what do the algorithmic solutions indicate. Each picture should have an explanation of every detail you felt was important.

"In a decomposition process, 2.40 g of impure CaCO3 (CaCO3 mixed with other substances that remain as residue) was decomposed at high temperature and a total pressure of 960.0 torr.

2.00 L CO2 gas was collected over water at 25.0 C. The Water Vapor Pressure is 26.0 torr at 25.0 C. Find Percent by mass of the pure CaCO3"

Thank you!

Read the following statement carefully and then answer the questions that follow.

The equilibrium constant (Kp) for the reaction of solid carbon with carbon dioxide producing carbon monoxide at 850 ºC, has a value of 0.70:

A. Write the reaction that takes place and the corresponding half-reactions.

B. Calculate the partial pressure of the equilibrium if you initially have 1 mole of CO2, in a 30 L container and at a temperature of 850 ºC, in addition to solid carbon.

C. Calculate the partial pressures of the equilibrium if you initially have 1 mole of CO2, under the same conditions as the previous section, but in a container whose volume is half. D. If the reaction is known to be endothermic, where will the system move if the temperature increases to 1000 ºC?

E. Assuming that the carbon monoxide formed in the above reaction is separated and a solution prepared by adding 1 L of water to said oxide; What is the final concentration in units of normality that would be obtained?