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Suggest an indicator that could be used to provide an end point for the titration of the first proton in
Given the following unbalanced chemical equation: Al + Cl2-> AlCl3 (a) Balance the equation. (b) How many moles of AlCl3 are produced from 2.75 mole of Cl2 (c) What is the molar mass of AlCl3 (d)
In a titration of 50.0mL of 0.1000 M formic acid with 0.100 M KOH, the titration error must be no more than 0.05mL. What indicator can be chosen to realize this goal
What is the volume percent of a solution prepared by dissolving 34 g of NaOH in enough water to make a final volume of 120 mL? Show your work. part b: How many mL of a 10% solution can be made from
Calculate the change in pH that occurs in each of the the solutions listed below as a result of a tenfold dilution with water. Round calculated values for pH to three figures to the right of the dec
What is the volume percent of a solution prepared by dissolving 9 g of NaOH in enough water to make a final volume of 120 mL. How many mL of a 10% solution can be made from the solution in part a
Calculate the pH of the solution that results when 20.0 mL of 0.200 M formic acid is mixed with 25.0ml of 0.200 sodium formate solution
A sample of helium gas occupies 1045 mL at 621 mmHg. For a gas sample at a constant temperature, determine the volume of helium at 745 mmHg.
According to Bohr model, the red line on the spectrum is hydrogen changing from what state (ni= ?) and to what state (nf = ?) ? Give calculation steps below to prove your choice.
Calculate the volume, in liters, of a 4.92 mol H2S(g) at 60 degrees C and 1.75 atm how do you do this
Complete the following reactions and state the dominant mechanism where indicated 3-chloro - 2,2-dimethylbutane + NH3
Phosgene, COCl2, is the chemical warfare gas commonly called mustard gas. It decomposes as written below. At 900 C, the Kc= 0.83. Assume 0.400 mol of COCl2 are admitted into a 2.00 L container at 90
For the reaction 2N2O5(g) yields 4NO(g)+ O2(g) what is the decomposition of N2O5(g)
Complete the following reactions and state the dominant mechanism where indicated: (1S,2S)-1-bromo-1,2-diphenylpropane + NaOCH3 Methanol
If K sub a is 1.85 x 10^-5 for acetic acid, calculate the ph at one-half the equivalence point and the equivalence point for a titration of 50 ml of 0.100 M NaOH.
A mixture of CO2 and Kr weighs 35.0g and exerts a pressure of 0.708 atm in its container. Since Kr is expensive, you wish to recover it from the mixture. After the CO2 is completely removed by absor
An ideal gas is compressed isothermally from 2.0 atm and 2.0 L to 4.0 atm and 1.0 L. Calculate the values of delta U and delta H is the process is carried out a) reversibly and b) irreversibly
Draw the major product of the 3,4 methyl 2 hexanol alcohol dehydration in the presence of H2SO4. Use the Zaitsev rule to predict the major product when necessary.
oxalic acid dihydrate (H2 C2 04). 2H20 (formula weight = 126 g/mol) is sometimes used to standardize NaOH solutions. How many grams of this acid will be required to titrate 45.0 mL of 0.18 M NaOH so
if 30.15 ml of 0.0995 M naoh is required to neutralize 0.216 g of an unknown acid, HA, what is the molecular weight of the unknown acid
What is the concentration of phosphate ions in this saturated solution? options: 0.00240 M 0.0216 M 0.00360 M 0.00720 M
A mixture of liquid hydrogen and water (99.99 mole %) is in equilibrium with hydrogen gas and water vapor at 25°C. Assuming ideal solution behavior, calculate the system pressure and the molar c
will the first drop of liquid n-heptane form? (c) At what operating temperature (°C) will 65% of the n-heptane condense
A compound is composed of only C and H. It contains 88.82% C by mass and has a molar mass of 54.09 g/mol. What is the correct molecular formula
find delta H for the solution of 1g NaOH in water d) find delta H for the solution of 1 mole NaOH in water e) Given the following heats of formation