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Brass has a specific heat capacity of 0.393 Joules/g C. A paperweight weighing 129g is heated to 95.0 C. Then it is added to 44.6g of water in a calorimeter having a temperature of 25.0 C. The temperature reaches a maximum reading of 40.0 C. What is the specific heat capacity of the paper weight? is it brass?
When a mole of C2H4 is combusted it reacts with 3 moles of O2 to produce CO2 and H2O. How many moles of CO2 and how many moles of H2O are produced?
how many moles of calcium ions are in 1L of a 2.0M solution of CaCl2
An engineer was trying to minimize greenhouse gases from car exhaust and was studying the gases that come from the trail pipe of a car at 800K.
What proportions of ethanol and water should be mixed in order to produce 100 cm3 of a mixture containing 50 percent by mass of ethanol.
How are the opposing pathways of glycolysis and gluconeogenesis prevented from extensive
Calculate the specific heat capacity of the metal when the final temperature of the mixture =38.7?C.? (Assume that there is no energy lost to the surroundings.)
A bottle containing 305 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
A total of 2.00mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 188g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7 degrees Celsius .
Calculate the final temperature when a 29.0 gram sample of ice at 0oC is placed into a styrofoam cup containing 115 grams of water at 75.7 oC. Assume that there is no loss or gain of heat from the surroundings.
53.6 g sodium nitrate is dissolved in water to make 654 g of solution.What is the percent sodium nitrate in the solution.
Acetic acid, CH3CO2H, is made industrially, by the reaction of methanol and carbon monoxide. If you produce 1.00L of acetic acid (d= 1.044 g/mL) by this reaction, how much energy as heat is evolved.
Consider a 1.00-L solution containing 85.5 g Al2(SO4)3 (FW = 342.15) and 21.3 g Na2SO4 (FW = 142.06). What are the molar concentrations of aluminum, sodium, and sulfate ions, respectively.
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