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- My quiz timed out and I was unable to answer the first question in time. I was also unable to answer the second correctly. This concept confuses me quite a lot and I'm not sure how to solve it in a step-by step processIn aqueous solution, chlorine dioxide oxidizes iodide ion to iodine and chlorine dioxide is reduced to chlorite ion. 2ClO2 (aq) + 2 I- (aq) ----> 2ClO2- (aq) + I2 (aq) The concentration in molarity, of ClO2 was measured at various time points. The data was plotted and the plot of [1/[ClO2] versus time in seconds was most linear. The linear regression equation for the plot is y= 7.60x10-2 (t) + 2.353. What is the concentration of ClO2 at 2.00 minutes if the initial concentration of ClO4 ia 0.425 M? a.) 0.0872 M b.) 2.50 M c.) 11.5 M d.) 0.399 MThis is an ungraded practice exam in which he gives us the answers but I would still like to know the reasoning behind
- A certified reference material of lead in calcium carbonate is analyzed by a laboratory and found to have a lead content of 237 ng/g.237 ng/g. The reported certified value for this material is 211 ng/g.211 ng/g. What is the absolute error and the percent relative error for the method used in this analysis? absolute error: percent relative error:3 Describe the similarities and differences of the Bradford and Biuret method (400 words)What are the limitations in chemical score when compared to other methods?
- Data obtained: Chips # of extractions Chips' weight (g) Fat weight (g) Regular 3 20.043 6.745 3 20.187 6.438 3 20.198 7.451 Low fat 3 19.456 3.982 3 20.072 4.547 3 20.192 4.589 Mass percent is a method of expressing the concentration of a substance in a mixture or element in a compound. It is calculated as the mass of the component divided by the total mass of the mixture and then multiplied by 100 to get the percent. The formula is: mass % of component= (mass of component / total mass) x 100% 1) Reproduce the following table, and use the data to determine the mass % of fat in the chips for each trial. 2) Show one example calculation. Chips Trial % by mass of fat Regular 1 2 3 Lowfat 1 2 3Give two examples of the Scale Factor Error (one of the types of systematic error). Please do not give what is already given in the example. I need it ASAP Thank you1. Calculate the experimental density of a salt solution and the percent error (same as relative error percent) using some or all the data given below. solubility of NaCl salt in water: 0.357 g/mLmass of empty graduated cylinder: 25.19g mass of graduated cylinder + salt solution: 30.47g total volume of salt solution: 4.98 mLtrue density of salt solution: 1.07 g/mL
- I am slightly confused on how to do this. I think I figured it out but I just want to compare data and take notes on what I have done incorrectly.9. The method described in Problem 5-8 is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample mass should be taken if the relative error resulting from a 0.4-mg loss is not to exceed(a) -0.1%? (b) -0.4%? (c) -0.8%? (d) -1.1%? Here is the number 5-8 5. Describe at least three ways in which a systematic error might occur while using a pipet to transfer a known volume of liquid.6. How are systematic method errors detected?7. What kind of systematic errors are detected by varying the sample size?8. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample isa. 500 mg. b. 50 mg. c. 150 mg.d. 70 mg.The pharmacist attempts to weigh 120 mg of codeine sulfate on a balance with a sensitivity requirement of 6 mg. Calculate the maximum potential error in terms of percentage.