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3.8 g of a hydrocarbon fuel is burned in a calorimeter that contains 234 grams of water initially at 25.00 ?C. After the combustion,the temperature is 26.55 ?C. How much heat is evolved per gram of fuel burned? The heat capacity of the calorimeter (hardware only) is 92.3 J/?C.
A 7.0 liter balloon at room temperature (22 degrees celsius) contains hydrogen gas. If the balloon is carried outside to where the temperature is -3.0 degrees Celsius.
The volume of a certain bacterial cell is 1.60 µm3. What is the volume of 105 cells in liters (L)?
What volume of 0.240 M K2S solution is required to completely react with 195 mL of 0.155 M Co(NO3)2.
2C4H10 + 13O2 → 8CO2 + 10H2O A. How many moles of O2 are needed to react with 3.75 moles of C4H10 ? B. How many grams of CO2 result when 85.5g of C4H10 react ?
Calculate the percent (by volume) of air that would be displaced when all of theN2 (l) get evaporated. it is given that Liquid nitrogen has a density of 0.807 g/mL
What is the temperature change If 84 joules of heat are added to a pure gold coin with a mass of fifteen grams? It is given that the Specific heat capacity of Au= 0.128
calculate the PH of a buffer solution prepared by dissolving 21.5 g benzoic acid and 37.7g sodium benzoate in 200.0 mL of solution?
If 158 of wet hydrogen is collected over water at 24 and a barometric pressure of 736 , how many grams of hydrogen have been consumed.
Determine what is the exact volume of the 250-mL Erlenmeyer flask express your answer (in mL)?
How many liters of 13.5 molar HCl stock solution are needed to make 10.5 liters of a 1.8 molar HCl solution?
When heated, lithium reacts with nitrogen to form lithium nitride: 6Li(s) +N2(g) → 2Li3N(s)
Iron has a density of 7.9 g/ cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm.
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