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A 65.0 g sample of zinc (specific heat = 0.0922 cal/g X deg C) was cooled from 100.0 deg. C to 29.4 deg. C in a calorimeter cup containing water initially at 21.5 deg. C. What is the mas of the water in the cup?
a 2.16-l sample of oxygen is collected at 99.6 kpa and 305k. if the pressure increases to 122.8 kpa and the temperature
What is the final temperature in a squeezed cold pack that contains 50.0g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18 for the solution, an initial temperature of 27.0 C, and no heat transfer between the cold pack and the..
Calculate H rxn for this reaction and compute how much heat is produced from a hand warmer containing 15.0 grams of iron powder.
Manufacturing overhead equal $5, $2, and $3respectively. Calculate the amount of material cost, labor cost, andoverhead cost in the beginning Work in Process.
The experiment all you observed rate law is rate =k [NO]^2 [Br2]. Show this mechanism is valid by deriving the rate law expression and showing that it is equal to the experimentally observed rate law
A gas has a volume of 5.60 at 0. What is the tempatuer in degrees celsius if the volume is 200mL
A glass bottle of normal capacity 250 cm^(3) is filled brim full of water at 20 degrees Celsius. If the bottle and contents are heated at 50 degrees Celsius, how much water spills over?
What is the deBroglie wavelength in meters of a 1-ton (907 kg) vehicle having a velocity
What is the molarity of ZnCl2 that forms when 30.0 of zinc completely reacts with CuCl2 according to the following reaction? Assume a final volume of 285 mL . Zn+ CuCl2=ZnCl2+Cu.
given 20 grams of cs2 and 3 moles of o2 and the following reaction the amount of co2 produced is cs2 3o2 ? co2
A beaker with 185 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.70 mL of a 0.440 M HCl solution to the beaker.
What is the net ionic equation of the reaction of \rm ZnCl_2 with \rm NaOH
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