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A pharmacist must calculate the shelf life for an antibiotic. The antibiotic is stored as a...
A pharmacist must calculate the shelf life for an antibiotic. The antibiotic is stored as a...
A pharmacist must calculate the shelf life for an antibiotic.
The antibiotic is stored as a solid and a fresh solution must be
prepared for the patient. The antibiotic is unstable in solution
and decomposes according to the following data:
Time (days)
[Antibiotic] (mol/L)
0
1.24 x 10-2
10.
0.92 x 10-2
20.
0.68 x 10-2
30.
0.50 x 10-2
40.
0.37 x 10-2
This is a first order process.
Question 1
Calculate the half-life for the antibiotic. The units...
Need help with these shelf-life calculations!! Step by step would be great! Thanks 1. The specific...
Need help with these shelf-life calculations!! Step by step would be great! Thanks 1. The specific decomposition rate k of an experimental drug obtained from Arrhenius plot is 3.4 x 10-4 hr-1 at room temperature. If the time required for 10% of a drug to degrade (t90%) represents a reasonable limit of degradation for the active ingredient and is designated as shelf-life, what will be the shelf-life in hours of this drug: 2. The shelf life of an API in...
At a certain temperature, the half-life of the first order decomposition of phenol (shown below) is...
At a certain temperature, the half-life of the first order decomposition of phenol (shown below) is 1.54 hr phenol cyclopentadiene carbon monoxide Answer the following questions about the decornposition of phenol and report all answers to three significant figures. 1. If the initial concentration of phenol is 8.73×10 2 M, calculate the time in hr required for the concentration o phenol to decrease to 50.3 % of the initial concentration. Submit Answer Tries 0/3 2. Tf the initial concentration of...
At a certain temperature, the half-life of the first order decomposition of 2,4-cyclohexadienone (shown below) is...
At a certain temperature, the half-life of the first order decomposition of 2,4-cyclohexadienone (shown below) is 2.11 hr 2,4-cyclohexadienone phenol Answer the following questions about the decomposition of 2,4-cyclohexadienone and report all answers to three significant figures. 1. If the initial concentration of 2,4-cyclohexadienone is 8.04×10-2 M, calculate the time (in hr) required for the concentration of 2,4-cyclohexadienone to decrease to 38.4 % of the initial concentration. Submit Answer Tries o/s 2. If the initial concentration of 2,4-cyclohexadienone is 8.04×10-2...
2a Calculate the freezing point of a solution that is made from 39.9 g of a...
2a Calculate the freezing point of a solution that is made from 39.9 g of a nonelectrolyte (ℳ = 142.4701 g/mol) dissolved in 186.3 g of solvent. The solvent freezes at 1.24 °C and its Kf value is 2.09 °C/m. Report your answer to TWO places past the decimal. 2b The solubility of carbon dioxide gas at 37.3 °C and a carbon dioxide pressure of 554 mmHg is 4.04 × 10−3 g/L. What is the Henry's Law constant in mol⋅L−1⋅atm−1?...
Initial rate data are listed in the table for the reaction: Initial rate data are listed...
Initial rate data are listed in the table for the reaction:
Initial rate data are listed in the table for the reaction: NH4+ (aq) + NO2 (aq) + N2 (g) + H20 (1) Experiment (NH4+]: [NO 2-1. Initial rate (M/s) 0.24 0.10 7.2 x 10-4 0.10 3.6 x 10-4 10.12 0.15 5.4 x 10-4 0.12 0.12 4.3 x 10-4 0.12 First determine the rate law and rate constant. Under the same initial conditions as in Experiment 4, calculate [NH4+] at...
Exercise 13.60 - Enhanced - with Feedback Calculate the molarity of each solution. = 2.0 x...
Exercise 13.60 - Enhanced - with Feedback Calculate the molarity of each solution. = 2.0 x 10-2 M Part 0.0314 mol of glucose in 74.7 mL of solution Express your answer using three significant figures. IVO ACO O a? M Submit Previous Answers Request Answer
A fossil was dated using rubidium-87, which undergoes beta decay and has a half-life of 4.75x1010...
A fossil was dated using rubidium-87, which undergoes beta decay and has a half-life of 4.75x1010 years. Calculate the age of the fossil if (5.7x10^1)% of rubidium-87 remains in the sample. Report your answer with 2 significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer units Question 2 (1 point) Thallium-201 is used to diagnose heart disease. The half-life of thallium-201 is 72.9 hours. If a patient takes 7.7 ug,...
Initial rate data are listed in the table for the reaction: NH4+ (aq) + NO2 (aq)...
Initial rate data are listed in the table for the reaction: NH4+ (aq) + NO2 (aq) → N2 (g) + H20 (1) AWNA Experiment (NH4+1: [NO2). Initial rate (M/s) 0.24 0.10 17.2 x 10-4 0.12 0.10 13.6 x 10-4 0.15 15.4 x 10-4 0.12 0.12 4.3 x 10-4 0.12 First determine the rate law and rate constant. Under the same initial conditions as in Experiment 4, calculate (NH4+] at 103 seconds after the start of the reaction. In this experiment,...
A pharmacist must calculate the shelf life for an antibiotic.
The antibiotic is stored as a solid and a fresh solution must be
prepared for the patient. The antibiotic is unstable in solution
and decomposes according to the following data:
Time (days)
[Antibiotic] (mol/L)
0
1.24 x 10-2
10.
0.92 x 10-2
20.
0.68 x 10-2
30.
0.50 x 10-2
40.
0.37 x 10-2
This is a first order process.
Question 1
Calculate the half-life for the antibiotic. The units...
At a certain temperature, the half-life of the first order decomposition of phenol (shown below) is 1.54 hr phenol cyclopentadiene carbon monoxide Answer the following questions about the decornposition of phenol and report all answers to three significant figures. 1. If the initial concentration of phenol is 8.73×10 2 M, calculate the time in hr required for the concentration o phenol to decrease to 50.3 % of the initial concentration. Submit Answer Tries 0/3 2. Tf the initial concentration of...
At a certain temperature, the half-life of the first order decomposition of 2,4-cyclohexadienone (shown below) is 2.11 hr 2,4-cyclohexadienone phenol Answer the following questions about the decomposition of 2,4-cyclohexadienone and report all answers to three significant figures. 1. If the initial concentration of 2,4-cyclohexadienone is 8.04×10-2 M, calculate the time (in hr) required for the concentration of 2,4-cyclohexadienone to decrease to 38.4 % of the initial concentration. Submit Answer Tries o/s 2. If the initial concentration of 2,4-cyclohexadienone is 8.04×10-2...
Initial rate data are listed in the table for the reaction:
Initial rate data are listed in the table for the reaction: NH4+ (aq) + NO2 (aq) + N2 (g) + H20 (1) Experiment (NH4+]: [NO 2-1. Initial rate (M/s) 0.24 0.10 7.2 x 10-4 0.10 3.6 x 10-4 10.12 0.15 5.4 x 10-4 0.12 0.12 4.3 x 10-4 0.12 First determine the rate law and rate constant. Under the same initial conditions as in Experiment 4, calculate [NH4+] at...
Exercise 13.60 - Enhanced - with Feedback Calculate the molarity of each solution. = 2.0 x 10-2 M Part 0.0314 mol of glucose in 74.7 mL of solution Express your answer using three significant figures. IVO ACO O a? M Submit Previous Answers Request Answer
A fossil was dated using rubidium-87, which undergoes beta decay and has a half-life of 4.75x1010 years. Calculate the age of the fossil if (5.7x10^1)% of rubidium-87 remains in the sample. Report your answer with 2 significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer units Question 2 (1 point) Thallium-201 is used to diagnose heart disease. The half-life of thallium-201 is 72.9 hours. If a patient takes 7.7 ug,...
Initial rate data are listed in the table for the reaction: NH4+ (aq) + NO2 (aq) → N2 (g) + H20 (1) AWNA Experiment (NH4+1: [NO2). Initial rate (M/s) 0.24 0.10 17.2 x 10-4 0.12 0.10 13.6 x 10-4 0.15 15.4 x 10-4 0.12 0.12 4.3 x 10-4 0.12 First determine the rate law and rate constant. Under the same initial conditions as in Experiment 4, calculate (NH4+] at 103 seconds after the start of the reaction. In this experiment,...
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