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Using chemical equations to show How to produce o-methyl aniline from aniline
a system initially containing 2.0 mol of H2O,1.0 mol of D2O and 2.0 mol of HDO is allowed to exchange hydrogen for deuterium.Determine the amount of H2O,D2O AND HDO expected at equilibrium.
Explain the experimental facts that cannot be explained by the simple model of Warners theory
How is magnesium sulfate monohydrate MgSO4⋅H2O used for in chemistry and how does it work as a valuable laboratory drying agent? What is its purpose in chemistry labs?

I could not find too much information in my book or the internet besides the basics (chemical formula, physical or chemical characteristics, etc.), but I did find what it can be used in. For example, fertilizer, feed additives for livestock, nutrient flavor enhancer, pharmaceuticals, leather and fur production, coloring fabrics, fermentation in beer, paper production, sewage treatment, cosmetics, but nothing about how or why chemistry labs would use it. What is its purpose?

Each time I tried to look it up other products that sounded similar but not the same appeared such as MgSO4⋅H2O or manganese sulfate, manganous sulfate etc.
300 kg of 20.0 weight % sulpuric acid is mixed with 400 kg of 40.0% sulphuric acid to produce a product. complete the mass balance.what is the weight @of sulphuric acid in a product?
A student obtained the following values for the percentage of Br in a bromide sample: 21, 20, 27, 22, and
19. What should be reported as the best estimate of the Br content of the unknown sample?
A piece of chalk (mainly calcium carbonate) is placed in 250. mL of 0.348 M HCl.
All the CaCO3 reacts, releasing carbon dioxide gas, and leaving a clear solution.
35.00 mL of the solution is pipetted into another flask.
28.8 mL of 0.0509 M NaOH is required to titrate the HCl remaining in this 35.00-mL portion.
What was the original mass of CaCO3 in the piece of chalk?
When 27.8 g of NH3 gas was used up in the following reaction and reportedly produced 36.4 g HCN what is the percent of yield of HCN. 2CH3+2NH3+302
1. For preparing a set of standard solutions of FeNCS2
In the experiment, 2.00 g of salicylic acid (molar mass = 138.1 g/mol) reacts with an excess amount of acetic anhydride

a. Calculate the theoretical yield of acetylsalicylic acid (molar mass = 180.2 g/mol) for this synthesis.

b. After completing the Experimental Procedure, a mass of 1.78 g of acetylsalicylic acid was recovered. What is the experimental yield for its synthesis? Express the yield with the correct number of significant figures.

2. Recrystallizing the aspirin removes some (or all) of the impurities in the sample. Explain how the recrystallization process performs this function.
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