Suppose you were asked to determine nickel in a steel sample using
a gravemetric method of analysis. State the precipitation reagent
that you would use and conditions that would be suitable for the
precipitation. What experimental variables would you control to
ensure that a crystalline precipitate is formed ?
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Suppose you were asked to determine nickel in a steel sample using a gravemetric method of...
5) People with severe contact dermatitis may have some concern over the nickel content Stainless steel utensils. Suppose you knew that the % Ni in a steel sample was approximately 10.00%. If you wanted to ensure that you produced 5.00 gramot precipitate, how many grams of steel would you suggest as a sample? Gwen Ni reacts with a precipitating agent called DMG in a 1:2 stoichiometry to form NI(DMG)2. The Molar mass of Ni = 58.69 g/mol; the molar mass...
Suppose you were using Stoke's law to calculate the viscosity of corn syrup, and you had some small steel spheres and some medium steel spheres. 1. Which variables in the Stoke's law equation would be different for the two sets of spheres? 2. Which variables in the Stoke's law equation would be the same? 3. Would the corn syrup viscosity be different from the experimental runs that used the small spheres compared to those that used the medium spheres? Explain.
you are asked to determine the protein content of ground beef, using a spectrophotometric method. Discuss your considerations to ensure sufficient protein extraction.
You need to perform gravimetric analysis of a water sample in order to determine the amount of Ag present. List three aqueous solutions that would be suitable for mixing with the sample to perform the analysis b. a. Would adding KNO3(aq) allow you to perform the analysis? Assume you have performed the analysis and the silver solid that formed is moderately soluble. How might this affect your analysis results? C. You need to perform gravimetric analysis of a water sample...
Please help with this question. Thank you! You are asked to develop a method for the quantitative analysis of the red dye cochineal red A, a synthetic dye used in the food industry (structure given below). This dye is commonly used in small amounts in food and cosmetics. Of the techniques we have discussed so far in class, choose a method that would be suitable for this analysis. List the specific instrument components (source, sample container, wavelength selector, and detector)...
5. The NHL recently expanded to 32 teams by adding Seattle. Suppose you were asked to predict ticket sales in Seattle for the 2021-2022 season using data from current NHL teams. What are some variables that you would want to use and why
5. The NHL recently expanded to 32 teams by adding Seattle. Suppose you were asked to predict ticket sales in Seattle for the 2021-2022 season using data from current NHL teams. What are some variables that you would want to use and why
5. The NHL recently expanded to 32 teams by adding Seattle. Suppose you were asked to predict ticket sales in Seattle for the 2021-2022 season using data from current NHL teams. What are some variables that you would want to use and why
suppose you were using the percentage difference method to determine the relationship between two varibles of interest arranged in a buvariate table. Are there instances where you might find a very large percentage difference yet fail to find statistically significant results after conducting a chi-square test? If so, what factors would explain this?
(You will need to know what Benedict’s reagent is, the reaction conditions that are used and how to interpret the experimental results.Please consider the scenario that you are working in an analytical laboratory and need to determine if a sample of synthetic sucrose is 100% pure.) 1. You ran two control experiments using the reagent; one with commercially purchased pure glucose and one with commercially purchase pure fructose. What would you expect the experimental results to show for the glucose...