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If the BaSO4 residue was baked in an oven at 100C for several hours rather than air drying, what effect would this have on its mass and how would the initial concentration of H2SO4 be affected (higher, lower, or no change)? Explain.
What is the molarity of Cl- in a solution made by mixing 37.5 mL of 0.100 M NaCl with 54.0 mL of 0.100 M KCl?
The solubility of silver phosphate in pure water and Na3PO4, Silver Phosphate, Ag3PO4, is an ionic compound with a solubility product constant Ksp of 206 x 10 ^ - 18.
2K(s)+2H2O(l)--> 2KOH(aq) + H2(g) A 5.00 g chunk of potassium is dropped into 1.00 kg water at 24 deg C. What is the final temperature of the water after the preceding reaction occur.
A helium-filled balloon has a volume of 2.75 L at 17 C. The volume of the balloon decreases to 2.36 L after it is placed outside on a cold day. What is the outside temperature in K?
Estimate the change in entropy if fifty kilo joules of energy are transferred reversibly and isothermally as heat to a large block of Cu at zero degree Celsius and seventy degree Celsius?
Calculate the final temperature of the solution has a specific heat capacity =4.18 J/°C · g. assuming no heat lost
Calculate the pH at the equivalence point for the titration of 0.100 M methylamine
write a report about the chemical equation about the combusiton of butane. the report must include the equation, a brief history about the combustion of butane and its importance to the world and any dangers involved.
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g)
Use metric conversion factors to solve the following problem. A park has an area of 150000 m^2. What is the area in km^2?
To determine the number of molecules present in air using the ideal gas law and Avogadro's number - how many molecules of each type of gas are present in 1.0 L of air at STP?
If you wanted to prepare a 1.45 L buffer with a total phosphate concentration of 0.0500 M, how many grams of NaH2PO4 and Na2HPO4 would you mix together? How many grams of conjugate acid do you need? How many grams of conjugate base do you need?
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