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Two spheres, labeled A and B, have identical masses, but are made of different substances. The specific heat capacity of sphere A is 645 J/(kg • C°) and that of sphere B is 240 J/(kg • C°). The spheres are initially at 21 °C; and the same quantity of heat is added to each sphere. If the final temperature of sphere A is 74 °C, what is the approximate final temperature of sphere B?
When 20.6 gm of methane and 39.7 gm of chlorine gas undergo a reaction that has a 73.3 % yield. What mass of CH3Cl forms. Hydrogen chloride also forms.
A compound is 42.9% C, 2.4% H, 16.7% N, and 38.1% O, by mass. Addition of 6.00 grams of this compound to 50.0 ml benzene, C6H6 (d = 0.879 g/mL), lowers the freezing point from 5.53 to 1.37 degrees celsius. What is the molecular formula of this com..
Calculate the number of grams of sulfuric acid present in the mixture after the reaction is complete. Calculate the number of grams of lead II sulfate present in the mixture after the reaction is complete.
A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5 x 10-5.
An evacuated (empty) 276 mL glass bulb weighs 129.6375 g. Filled with an unknown gas, the bulb weighs 130.0318 g. Calculate the gas density in g/L.
If a 0.10mL volume of oil can spread over a surface of water of about 32.0m^2 area, calculate the thickness of the layer in centimeters. Enter your answer in scientific notation.cm?
Use the molar volume of a gas at STP to calculate the density (in g/L ) of carbon monoxide gas at STP.
If 145 grams of potassium nitrate were added to water to make 1,500 mL of solution, what would be the molarity of the resulting solution?
Write equations for the folowing seperations. indicate any condition required for the reactions to occur, such as p.H 5. Fe2+ from Cr3+ ions
After treating an antacid tablet with 5.00mL of 6M HCl, the unreacted acid was diluted to exactly 250mL with distilled water in a volumetric flask. 25.00 mL of that diluted acid required 17.03 NaOH to neutralize it. Calculate the amount of acid ne..
What is the molarity of a solution of 10% by mass cadmium sulfate, CdSO4 (molar mass = 208.46 g/mol) by mass. The density of the solution is 1.10 g/mL.
How could you seperate acetaminophen from sucrose, and aspirin. Also generate a flow chart for the separation acetaminophen from sucrose and aspirin
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