starting from 1.50Lof0.0200Msolution of benzoic acid(C6H5COOH)and an excess of sodium benzoate(C6H5COONa).How many grams of sodium benzoate should be added to prepare the buffer? Neglect the small volume change that occurs when the sodium benzoate is added. The Correct Answer and Explanation is : To solve this problem, we need to calculate how many grams of […]
How would you prepare a benzoic acid/benzoate buffer with a pH of 4.25, starting with 5.0L of .050M sodium benzoate (C6H5COONa solution and adding the solid acidic component (Ka of benzoic acid =6.3×10^-5)? How would you prepare a benzoic acid/benzoate buffer with a pH of 4.25, starting with 5.0L of .050M sodium benzoate (C6H5COONa solution
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In Gas metal arc welding (MIG) which of the following polarity is generally used a. Direct current straight polarity (DCSP)b. Direct current reverse polarity (DCRP)c. Alternating Current high frequency (ACHF)d. All of the above The Correct Answer and Explanation is : The correct answer is b. Direct Current Reverse Polarity (DCRP). In Gas Metal Arc
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Guy Holcomb owns and operates Oasis Goodtime Emporium, an adult entertainment establishment. Holcomb wanted to create an adult Internet system for Oasis that would offer customers adult theme videos and “live” chat room programs using performers at the club. On May 10, Holcomb signed a work order authorizing Thomas Consulting Group (TCG) “to deliver a
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The Chemical formula of Rubidium (Rb) sulfide is a. Rb2S2 b. RbS2 c. Rbs d. Rb2S Draw the Lewis structure for the ionic compound that forms from Al and N. Write a Matlab code that asks the user to input a number. Then, your code should perform one of the operations described below according to
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Calculate the theoretical yield of aspirin if 2.10 grams of salicylic acid was used with excess acetic anhydride. Answer: Theoretical Yield = 2.74g Assume a student reported an 89% yield from the reaction in the problem above. What is the mass of aspirin that’s obtained experimentally?Original Problem: Calculate the theoretical yield of aspirin if 2.10
Enzymes and Cellular Regulation What are the factors that regulate the rate at which enzymes catalyze reactions? Why? Digestive enzymes are protein-based biological catalysts that play important roles in our lives. They help remove stains from our shirts, turn milk into cheese, and are responsible for turning our dinner into use able fuel for our
What are the common parts of the nucleotide? 2. Name the different kinds of nitrogenous bases found in the DNA molecule. 3. In DNA what is the paring arrangement of the bases? The Correct Answer and Explanation is : This pairing is based on hydrogen bonds: A-T pairs form two hydrogen bonds, while C-G pairs
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Experts estimate that for the US to reach 100% renewable energy in 2050 , it will require $7.8 trillion. Calculate the percent change this would represent from the 2018 investment level of $46.5 billion. Show work! The Correct Answer and Explanation is : To calculate the percent change in investment from the 2018 level of
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It turns out that the average retirement age of National Football League (or NFL) players is Normally distributed, with a mean of 33 years and a standard deviation of 2 years. Eddie George is a former NFL player who retired at the age of 30 years. What percentage of NFL players retired at an even