A chemist carefully measures the amount of heat needed to raise the temperature of a 860.0 mg sample of C4H8O₂ from 47.5 °C to 58.2 °C. The experiment shows that 15.6 J of heat are needed. What can the chemist report for the molar heat capacity of C4HO₂? Be sure your answer has the correct number of significant digits.

A chemist carefully measures the amount of heat needed to raise the temperature of a 860.0 mg sample of C4H8O₂ from 47.5 °C to 58.2 °C. The experiment shows that 15.6 J of heat are needed. What can the chemist report for the molar heat capacity of C4HO₂? Be sure your answer has the correct number of significant digits.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

The conversion of sulfur dioxide to sulfur trioxide is exothermic: SO2 (g) + ½ O2 (g) → SO3 (g) ΔH°rxn = ??? A certain exothermic reaction occurs in a coffee cup calorimeter that contains 425 mL of water. When the reaction reaches completion, the temperature of the water has increased by 2.37°C. If 3.47 g of SO3 are produced in the reaction, what is ΔH°rxn?
A chemist carefully measures the amount of heat needed to raise the temperature of a 1.27kg sample of C4H6O2 from 41.3°C to 60.6°C. The experiment shows that 3.87 × 10^4J of heat are needed. What can the chemist report for the molar heat capacity of C4H6O2? Round your answer to 3 significant digits. = J⋅mol−1K−1
A chemist carefully measures the amount of heat needed to raise the temperature of a 0.81kg sample of C4H6O2 from 31.4c to 49.6c. The experiment shows that 2.48*10^4 J of heat are needed. what can the chemist report for the molar heat capacity of C4H6O2 ? Round your answer to 2 sig figs.
When pure sulfuric acid is dissolved in water, heat is evolved. 10.65 g of pure sulfuric acid at 20.00 °C was added to a calorimeter containing 300 g of water at 20.00 °C. The temperature of the solution increased to 26.35 °C. If the specific heat of the mixture is 4.184 Jg1°C1, the density of water is 1 g/mL, and the heat capacity of the calorimeter is ignored, what is the heat evolved per mole of sulfuric acid? a. -83.2 kJ O b. -73.6 kJ O C. -76.0 kJ d. -80.8 kJ e. -78.4 kJ
When 6.54 grams of Zn is placed in 500.0 mL of 1.00 M CuSO4(aq) in a coffee cup calorimeter, it reacts completely to displace copper. The temperature of the solution rises from 20.0˚C to 30.4˚C. Assume the coffee cup itself gains no heat and that the solution has the same density (1.00 g/mL) and specific heat (4.184 J/g˚C) as pure water. (a) How much heat does the solution gain during this reaction? (in J)
A chemist carefully measures the amount of heat needed to raise the temperature of a 155.0mg sample of C9H10O2 from 46.5°C to 66.3°C . The experiment shows that 4.80J of heat are needed. What can the chemist report for the molar heat capacity of C9H10O2 ? Be sure your answer has the correct number of significant digits. ⋅J⋅mol−1K−1
A chemist carefully measures the amount of heat needed to raise the temperature of a 1.54 kg sample of C5H₁2S from 5.8 °C to 17.4 °C. The experiment shows that 3.51 × 104 J of heat are needed. What can the chemist report for the molar heat capacity of C5H₁2S? Be sure your answer has the correct number of significant digits. 12 - 1 – 1 K J. mol x10 X Ś 6 0 U
A chemist carefully measures the amount of heat needed to raise the temperature of a 0.88 kg sample of C,H0, from 35.8 °C to 51.4 °C. The experiment shows that 2.34 × 10* J of heat are needed. What can the chemist report for the molar heat capacity of C,H00,? Round your answer to 2 significant digits. |J-mol 1 - 1 •K х10
A chemist carefully measures the amount of heat needed to raise the temperature of a 1.65kg sample of C9H10O2 from 25.9°C to 37.9°C. The experiment shows that 3.09 X 104J of heat are needed. What can the chemist report for the molar heat capacity of C9H10O2? Round your answer to 3 significant digits. = J * mol-1 * K-1
Calculate the energy required to heat 141.0mg of mercury from −1.1°C to 17.8°C . Assume the specific heat capacity of mercury under these conditions is 0.139J·g−1K−1 . Be sure your answer has the correct number of significant digits.
5.00 × 10−2 mol KOH and an excess of hydrochloric acid are combined in 100.0 mL of water initially at 25.0 °C, leading to a final measured temperature of 31.1 °C. (a) What is the heat flow for the water in the calorimeter, qH2O, in Joules? (b) Assuming the calorimeter constant Ccal = 50.0 J °C , what is the heat flow for the calorimeter, qcal, in Joules? (c) What is the amount of heat given off by the reaction, qrxn, in Joules? (d) What is the molar enthalpy of the neutralization reaction (shown below) as measured in the calorimeter, ∆H◦ rxn in kilojoules per mole? H3O + (aq) + OH– (aq) → 2H2O (l)
A chemist carefully measures the amount of heat needed to raise the temperature of a 531.0mg sample of C9H10O2 from 40.1°C to 58.2°C . The experiment shows that 15.1J of heat are needed. What can the chemist report for the molar heat capacity of C9H10O2 ? Be sure your answer has the correct number of significant digits. ⋅J⋅mol−1K−1