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The figure below is a heat curve for an unknown outerspace substance discovered by the Mars rover. By understanding the heat curve, scientists can make inferences about the composition of the planet. What is the temperature of fusion, Tfusion, and vaporization, Tvapor, for this unknown substance? Note that the units are graded. For a sample of 75.4 g of this substance with a specific heat of 54.8 J/kg·°C, how much heat is added to the substance if the temperature is to change from 180.0°C to 232.0°C?
Given stock solutions of glucose (1M), asparagine (100 mM), and NaH2PO4 (50 mM), how much of each solution would you need to prepare 500 mL
Identify the best nucleophile for 2-bromo-2-methylpropane and 2-chloro-2-methylpropane in an Sn1 and a Sn2 reaction; acetone, isopropanol
Problem- 1) A 0.030 M solution was prepared by dissolving dipotassium cysteine, K2C in water. Then 40.0mL of this solution was titrated with 0.060 M HClO4. Calculate the pH at the first equivalence point
here why is the -NHCOCH3 group less activating in electrophilic substitution compared to the -NH2 group
Practicals 1 (atomic absorption) and 2 (UV/Vis/fluorescence) will form the basis of a standard laboratory report. Practical 3 (GC-FID) will be completed as a proforma in the laboratory session.
Some of the ice melts and cools the water to 0 degrees celsius. When the ice and water mixture has come to a uniform temperature of 0 degrees celsius, how much ice has melted
If a solute interacts strongly with the stationary phase what practical implication might this have
Rank the diffusion coefficients from least (1) to greatest (4) for the following cases. Assume the temperature is the same for all cases. 1-4 Interdiffusion C in gamma-Fe
Explain Zinc sulfide reacts with nitric acid to give zinc sulfate and nitric oxide. Compute the mass of zinc required to react with 110mL of 0.15 M nitric acid
lead nitrate is needed to precipitate all of the chloride ion in a 10.00-mL sample of an unknown. What is the molarity of the chloride ion in the student's unknown?
Titration of the lead and zinc in this aliquot required 34.06 mL of the EDTA solution. Finally, cyanide was used to mask the copper and the zinc in a 25.00 mL aliquot. Titration of the lead required 26.68 mL of the EDTA solution. Determine the com..
How many moles of NiCl can be formed in the reaction of 5.00 mol of Ni and 10.0 mol of HCl
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