SHOW-YOUR-WORK: You must clearly write down the mathematical and logical steps used to convert the given information into the final reported results. If you use a mathematical equation, you must first write that equation symbolically, then show how the numbers are plugged into it, and then give the calculated numerical results. If you need to make any assumptions, you must write appropriate validity tests for those assumptions. Every number you write down must have appropriate units and proper significant figures. 4. What is the concentration of bromide ion (Br) in a solution made by diluting 10.00 ml of 0.20 M aluminum bromide (AIBR3) to 100.0 mL?

SHOW-YOUR-WORK: You must clearly write down the mathematical and logical steps used to convert the given information into the final reported results. If you use a mathematical equation, you must first write that equation symbolically, then show how the numbers are plugged into it, and then give the calculated numerical results. If you need to make any assumptions, you must write appropriate validity tests for those assumptions. Every number you write down must have appropriate units and proper significant figures. 4. What is the concentration of bromide ion (Br) in a solution made by diluting 10.00 ml of 0.20 M aluminum bromide (AIBR3) to 100.0 mL?

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 36E: You receive a mixture of table salt and sand and have to separate the mixture into pure substances....

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You receive a mixture of table salt and sand and have to separate the mixture into pure substances. Explain how you would carry out this task. Is your method based on physical or chemical properties? Explain.
1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
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Dimensional Analysis is a way of doing numerical "book-keeping" when converting quantities or performing calculations. • When converting quantities from one unit to another, conversion factors are used. Solving with Dimensional Analysis and Multiple Units: If I am in Canada where the price of gas is $1.022 USD·L1, how much will it cost me to fill up my gas tank if I travelled 125 km? • Let's also assume that my car gets an average of 30.0 miles/gallon.
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In microbiology, dilutions are critical for getting a countable number of microbes to grow on a petri dish. If you suspect your culture of bacteria has 50 x 106 cells per mL, what would you want the final dilution to be in order to end up with 50 colonies of bacteria on a petri dish? Express your answer as an exponent rounded to two decimal places. Eg. 10.01e-3, not 0.00101. Treat colonies of bacteria (cells / mL) the way you would treat concentration (Moles / L) The formula M1V1 = M2V2 can still be used. The final concentration is the number of colonies on the petri dish. Solve %3D for V2. A 0.00000001 dilution is performed on a culture of bacteria in order to perform viable plate counts. From the dilution, *0.1 mL* of solution is plated on solid media, and 150 colonies of bacteria grow on the petri dish. Assuming each colony came from a single bacterium, how many bacteria are in a single mL of the original culture? Express your answer to two decimal places using exponential notation.…
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Solid PbBr2 (Ksp = 6.6 x 10-6) added to a solution of AgNO3, which results in the formation of solid AgBr (Ksp =5.5 x 10-13). For the following question, enter your answer to the appropriate number of significant figures. When inputting an answer in scientific notation, use “e” notation rather than multiplying by a power of 10. For example: 0.00031 = 3.1e-4. Do not write 3.2x10^-4. Do not include units in your answer (but do consider them when solving the problem!) Calculate Koverall using the balanced equation.