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A student is doing the experiment Chemical Formulas of Copper Sulfide by heating copper with excess of sulfur at very high temperatures using a Bunsen burner. Copper and sulfur react stoichiometrically and excess of sulfur escapes from the crucible as sulfur dioxide. He collected the following data:
Mass of crucible, cover, and copper 20.015 g
Mass of crucible and cover 19.548 g
Mass of crucible, cover, and copper sulfide 20.135 g
Determine the empirical formula of copper sulfide. Show calculations.
Identify how precitipation reactions can be used in the water treatment and purification processes to help maintain a safe municipal water supply.
Calcium hydrogen phosphate is a component of plant fertilizers (a source of phosphate). It is a relatively insoluble hydrated ionic compound, CaHPO4·2H2O, with a Ksp of 2.7×10-7 at 25°C
The following measurements refer to the same solution, but one is incorrect. Identify the incorrect value and enter the correct value in the space below. Enter exponents using "e-notation
Calculate the new volume of a 7.0Liter balloon if the pressure is reduced from 1.0 atmosphere to 0.80 atmosphere (assume the temperature remains constant)
Question- Explain why the acetylation requires one mole of acetic anhydride per mole of phenetidine despite the fact that acetic anhydride contains two acetyl groups. How is the by-product containing the second acetyl group removed from phenacetin
Question- 5.20 mol of Solid A was placed in a 1.00 L sealed container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.40M, Where it remained constant.
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..
The addition of anhydrous calcium chloride to the crude product obtained from the separation procedure often results in the product becoming clear (transparent). What causes the clearing?
lots of space between gas particles B. little to no space between gas particles C. nothing about the space between gas particles can be inferred.
This causes serious health problems among people in the location. Which of these is the best method to solve this problem?
Problem- What is the chemical equation for the above reactants. What are the states of each reactant and product. Are any products insoluble
A large balloon is initially filled to a volume of 25.0 L at 353 K and a pressure of 2575 mm Hg. What volume of gas will the balloon contain at 1.35 atm and 253
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