10.5 mL of 0.100M ammonium chloride aqueous solution is titrated with 0.100 M NaOH(aq).
What type of solution is present when VNaOH = 2.00 mL?
Select one:
a. strong acid
b. strong base
c. weak acid
d. weak base
e. buffered
In: Chemistry
Reorganize the following list of cations in the order of strongest to the weakest potential for hydrolysis
Ca2+, Ba2+, Cs+, Li+, Cr3+, Fe3+, Pb4+, Na+, K+, Mg2+
Thanks!!
In: Chemistry
Calculate the EMF of the cell:
Al(s) | Al3+ (0.02 M) || Au+ (0.01 M) | Au(s)
Where Al3+ + 3e- Al E o= -1.66 V
Where Au+ + e- Au E o = +0.99 V
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What mass of sucrose (C12H22O11) should be combined with 461g of water to make a solution with an osmotic pressure of 8.20atm at 305K ? (Assume the density of the solution to be equal to the density of the solvent.)
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Caproic acid is composed of C, H, and O atoms. Combusting a 0.450 gram sample of the compound in air produces 1.024 grams CO2 and 0.418 grams H2O. The molecular weight of caproic acid is 116 grams/mol. How can we find the molecular formula for caproic acid? Please show all work
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How can you ensure a quantitative transfer of your product during transfer steps? What would be the expected frequency range (in cm-1) of the C=O stretch in 2,4-pentanedoine? Based on the structural differences, what changes would you expect to see in the spectrum of the product?
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When 100 mL of an aqueous solution containing 1.0 g of caffeine is extracted with 10 mL of chloroform at room temperature, 0.5 g of caffeine is transferred to the chloroform layer. Calculate the distribution coefficient of caffeine between chloroform and water at room temperature.
In: Chemistry
In: Chemistry
The picture below shows two bulbs connected by a stopcock. The 6.00-L bulb contains nitric oxide at a pressure of 0.400 atm, and the 1.50-L bulb contains oxygen at a pressure of 2.50 atm. After the stopcock is opened, the gases mix and react: Determine which gases remain after the reaction goes to completion and calculate their partial pressures. The temperature at the beginnning and the end of the experiment is 22 °C. Which gases are present at the end of the experiment? What are the partial pressures of the gases? If the gas was consumed completely, put 0 for the answer.
In: Chemistry
|
alculate the pH of the following solutions. |
Part A Solution prepared by dissolving 5.5g of lithium hydroxide in water to give 230mL of solution. Express your answer using two decimal places.
SubmitMy AnswersGive Up Part B Solution prepared by dissolving 0.96g of hydrogen chloride in water to give 0.48L of solution. Express your answer using two decimal places.
SubmitMy AnswersGive Up Part C Solution prepared by diluting 57.0mL of 0.120M HCl to a volume of 1.00L . Express your answer using two decimal places.
SubmitMy AnswersGive Up Part D Solution prepared by mixing 119.5mL of 1.3 |
In: Chemistry
Explain the IMFs for the Following and wether they are soluble, insoluble or partially insoluble:
-Acetone and Butanol, acetone and ethanol, acetone and CCl4, acetone and hexane, acetone and H2O
-Butanol and ethanol, butanol and CCl4, butanol and hexane, butanol and H2O
-CCl4 and ethanol, CCl4 and hexane, CCl4 and water
-Ethanol and hexane, and ethanol and H2O
-Hexane and water
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calculate the ph of a solution when 15ml of 0.5M naoh is added to 30ml of a 0.8 M benzoic acid (Benzoic acid is a monoprotic acid and has a ka of 6.5 x 10^-5
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A student conducted an experiment to determine what factors are important in the rate of a reaction between potassium carbonate and hydrochloric acid. The student diluted 2.000 mL of 4.000 M K2CO3 to 75.00 mL, then combined that solution with 75.00 mL of 2.000 M HCl.
The student tabulated the amount of CO2 gas collected over time and recorded the results in the columns to the left.
| Time (min) | Volume (mL) |
| 1 | 0.2 |
| 2 | 0.3 |
| 3 | 0.5 |
| 4 | 0.7 |
| 5 | 0.9 |
| 6 | 1 |
| 7 | 1.2 |
| 8 | 1.3 |
| 9 | 1.5 |
| 10 | 1.7 |
| 11 | 1.9 |
| 12 | 2 |
| 13 | 2.2 |
| 14 | 2.4 |
| 15 | 2.5 |
| 16 | 2.7 |
| 17 | 2.9 |
| 18 | 3 |
| 19 | 3.2 |
| 20 | 3.4 |
| 21 | 3.5 |
| 22 | 3.7 |
| 23 | 3.9 |
| 24 | 4.1 |
| 25 | 4.2 |
| 26 | 4.4 |
| 27 | 4.6 |
| 28 | 4.7 |
| 29 | 4.9 |
| 30 | 5.1 |
| 31 | 5.2 |
| 32 | 5.4 |
| 33 | 5.6 |
| 34 | 5.7 |
| 35 | 5.9 |
| 36 | 6.1 |
| 37 | 6.2 |
| 38 | 6.4 |
| 39 | 6.6 |
| 40 | 6.8 |
| 41 | 6.9 |
| 42 | 7.1 |
| 43 | 7.3 |
| 44 | 7.4 |
| 45 | 7.6 |
| 46 | 7.8 |
| 47 | 7.9 |
| 48 | 8.1 |
| 49 | 8.3 |
| 50 | 8.4 |
| 51 | 8.6 |
| 52 | 8.8 |
| 53 | 9 |
| 54 | 9.1 |
| 55 | 9.3 |
| 56 | 9.5 |
| 57 | 9.6 |
| 58 | 9.8 |
| 59 | 10 |
| 60 | 10.1 |
| 61 | 10.3 |
| 62 | 10.5 |
| 63 | 10.6 |
| 64 | 10.8 |
| 65 | 11 |
| 66 | 11.1 |
| 67 | 11.3 |
| 68 | 11.5 |
| 69 | 11.7 |
| 70 | 11.8 |
| 71 | 12 |
| 72 | 12.2 |
| 73 | 12.3 |
| 74 | 12.5 |
| 75 | 12.7 |
| 76 | 12.8 |
| 77 | 13 |
| 78 | 13.2 |
| 79 | 13.3 |
| 80 | 13.5 |
| 81 | 13.7 |
| 82 | 13.8 |
| 83 | 14 |
| 84 | 14.2 |
| 85 | 14.4 |
| 86 | 14.5 |
| 87 | 14.7 |
| 88 | 14.9 |
| 89 | 15 |
| 90 | 15.2 |
| 91 | 15.4 |
| 92 | 15.5 |
| 93 | 15.7 |
| 94 | 15.9 |
| 95 | 16 |
| 96 | 16.2 |
| 97 | 16.4 |
| 98 | 16.6 |
| 99 | 16.7 |
| 100 | 16.9 |
1. Use a rearrangement of PV = nRT to solve for the number of moles of CO2 produced. You may assume atmospheric pressure and room temperature. Enter (and fill down) your formula in column C.
This is suppose to be an excel file bt i do not know how to manipulate the formula where I can put it into excel and what information to extract from the problem to use in order to help solve the problem.
HELP PLEASE !!
In: Chemistry
Which of the following aqueous solutions are good buffer
systems? and Why?
.
0.19 M potassium hydroxide + 0.27 M potassium bromide.
0.28 M hydroiodic acid + 0.18 M sodium iodide.
0.30 M ammonia + 0.37 M ammonium nitrate.
0.17 M hypochlorous acid + 0.12 M hydrobromic acid.
0.38 M calcium bromide + 0.30 M barium bromide.
In: Chemistry
Part A
A solution of water (Kf =1.86 ∘C/m) and glucose freezes at − 4.75 ∘C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 ∘C. Express your answer to three significant figures and include the appropriate units.
Part B
A solution of water (Kb =0.512 ∘C/m) and glucose boils at 101.56 ∘C. What is the molal concentration of glucose in this solution? Assume that the boiling point of pure water is 100.00 ∘C.
Express your answer to three significant figures and include the appropriate units.
In: Chemistry