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Could someone please provide me the steps as how to solve this? I have the answer, and if you get it correct, I will rate you 5 stars.
In the gravimetric determination of Zn^2+, 2.2024 g sample was dissolved and made up to volume in a 100.0 mL flask. A 10.0 mL aliquot were precipitated by adding a soluble pyrophosphate salt and heating the precipitate to a solid Zn2P2O7 (304.728 g/mol). The final, dried product weighed 0.1314 g. What is the percent weight of Zn (65.39 g/mol) in the original sample
Make the following assumptions in your calculation; at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Assume that the engine coolant is pure ethylene glycol (HOCH2CH2OH), which is no..
A student mixes 175.0 grams of water at 62.31oC in a coffee-cup calorimeter with 175.0 grams of water at 25.84oC. The final temperature of the mixture is 41.71oC.
A mixture of 82.49 g of aluminum (MM = 26.98 g/mol) and 117.65 g of oxygen (MM = 32.00 g/mol) is allowed to react. Identify the limiting reactant and determine the mass of the excess reactant present in the vessel when the reaction is complete.
calculate both its boiling point and its freezing point in C.
An unknown compound has a forula of CxHyOz. You burn 0.1523 g of the compound and isolate 0.3718 g of CO2, and 0.1522 g of H2O. What is the empirical formula of the compound?
Calculate the vapor pressure of water, in torr, above a solution prepared by dissolving 65.40 g of ZnCl2 in 445.0 g of water at 323.0 K. The vapor pressure of pure water at 323.0 K is 92.50 torr.
Did enzyme denaturing affect the active site? what amino acid residue in catalase would change by more basic PH
A 3.664 g sample of a monoprotic acid was dissolved in water. It took 20.27 mL of a 0.1578 M sodium hydroxide solution to neutralize the acid. Calculate the molar mass of the acid.
The observed melting point of camphor is often low. Look up the molal freezing point depression constant K for camphor and calculate the expected depression of the melting point of a quantity
Discuss solutions, solvents and solutes in relationship to water. One our last topic, discuss hypotonic and hypertonic fluids and why these impact cells.
What is the percent-yield of H2 In the reaction below when an equimolar mixture of CH4 and CO2 with an initial total pressure of 20.0 atm reaches equilibrium at 1200. K, at which Kp = 3.548 x 106
An unknown element crystallizes in a body-center cubic crystal structure. The atomic radius of the substance is 2.532 Å and its density is 1.208 g/cm3.
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