Begin with 3 free Unit 11 practice problems. When you want more reps on q = mcΔT, calorimetry, enthalpy, and energy changes, premium unlocks Quick Sets of 3, Standard Sets of 9, and Extended Sets of 18 from this 84-problem bank.
3 Free Sample Problems
A helpful first set: these 3 problems let you check whether the energy relationships are starting to feel organized or whether you want more time with the setup.
#4Calorimetry
A 50.0 g metal sample at 95.0°C is added to 100.0 g of water at 22.0°C. The final temperature is 27.8°C. What is the specific heat of the metal? (c_water = 4.18 J/g°C)
#5Enthalpy
For a reaction with ΔH = −286 kJ, which of the following is true?
#6Hess's Law
Given: C + O₂ → CO₂, ΔH = −393 kJ and CO + ½O₂ → CO₂, ΔH = −283 kJ. Find ΔH for: C + ½O₂ → CO.
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Choose Quick Sets (3), Standard Sets (9), or Extended Sets (18)
84 practice problems in this unit bank
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The full sets give you more chances to set up the equation correctly, track the signs carefully, and connect the numbers to the chemistry.