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Assume that the specific heat of the rocks is 0.082 J/g-k, large beds of rock are used is some solar-heated homes to store heat. Determine the quantity of heat absorbed by the 50.0 kg of rocks
Explain how much heat does it take to raise the temperature of 225 grams of water from the 25 degrees Celsius to 100 degrees Celsius?
Determine what will the final temperature be for a 5.00 gram silver ring at37 degrees Celsius if it gives off 25.0 J of heat to its surroundings? [sAg = 0.235 J/g degrees Celsius]
What will its temperature be after it absorbs 4.22 kJ from its surroundings when a 454 gram block of lead is at an initial temperature of 22.5degrees Celsius. [sPb = 0.128 J/g degrees C
The water temperature rises from 20.1 degrees Celsius to 22.6 degrees Celsius. A 23.9 gram sample of iridium metal is heated to 89.7 degrees Celsius and then dropped into the 20.0 grams of wate
After mixing the two, the temperature rises to 21.21 degrees Celsius. Calculate the heat generated by the reaction, and then calculate how many kJ were released per mole of reactant.
What is the partial pressure of Xe in the mixture when a mixture of Kr and Xe has a density of 2.50 g/L at a total pressure of 0.500 atm and at 0 deg C.?
Determine the numbers of monochlorination products are expected from the reaction of 2,4-dimethylpentane and chlorine in the presence of light?
Determine the chemical equation for the dehydration of cyclohexanol? Determine the theoretical yield for the dehydration of 3.0ml of cyclohexanol.
What is the ratio of the number of moles of cyclo-propane to moles of oxygen when a balloon contains an anesthetic mixture of cyclo-propane (cp) and oxygen (O2) at 172 torr and 570. torr, respective
Determine the mass matom of the single atom in kilograms? (Note that 1u=1.6605×10-27kg). Determine how many moles of atoms are in a 285-gsample?
Determine the numbers of grams of Na2CO3 are present in the 575L of the Na2CO3solution? (Create a conversion factor to convert from the sample with a volume of 15mL to a solution with a volume of 57
What optical rotation will be observed for this compound when measured in a 1 dm tube at a concentration of 0.2 g/10 mL? The (+) enantiomer of a particular compound has a specific rotation of&nbs
Determine the equilibrium constant, K, value (ignore units) at the 460.0K for the following reaction? N2(g)+3H2(g)→ 2NH3(g) What is the equilibrium constant, K, value at 460.0K for the following
At 25oC the substance X is an element which has the elemental form of X(s). At 25oC the standard enthalpy of formation of HXO4 (g) is -970.8 kJ/mol.
Given that So=201.0 J/mol K for RO2 (g) and So=138.4J/mo lK for RO3 (g) at25oC. Determine the standard change in entropy (J/K) at25oC for the reaction below?
Elemental Boron is a mixture of two isotopes, Boron- 11 and Boron- 10, of atomic mass 11.009 amu and 1-.013 amu respectively. The atomic mass of Boron recorded in the Periodic Table is 10.81 amu.
Illustrate the structures for these alkenes. Explain which alkenes would you predict to be produced in the greatest abundance? When 2-butanol undergoes E1 dehydration, three alkenes are obtained.
When the starting temperature of the balloon was 18 degree Celsius, then what final temperature is required to raise the volume of a hot air balloon from 960 h to 1200 h?
Determine the concentration, in mg/mL, of Ag + and PO3^ -3which will remain in the solution if 50.00mL of 0.020F AgNO3 is mixed with 150.00mL of 0.0250 FNa3PO4. Will a precipitate be formed?
How would you separate the acetylsalicylic acid in this case? Sometimes aspirin (acetylsalicylic acid) is present in analgesic tablets such as a calcium salt, which is water soluble.
Determine the molarity of the chloride ion in the original unknown calcium chloride solution assuming the solution contained only the calcium chloride.
Determine the molar mass of acetaminophen, C8H9NO2? Determine the number of molecules of acetaminophen in a single dose of two tablets, each containing 500.00 mg of the drug.
Suppose 100.0ml of 2.00 x 10-3 M KSCN was mixed with 100.0ml of 2.00 x 10-3 M Fe(NO3)3. At a given temperature the equilibrium constant for a reaction is 1.40 x 102.
Determine the enthalpy charge for the incomplete combustion of methane (CH4) from the following data. (Hint: You will need to write the balanced overall reaction, remembering that incomplete combust