In an experiment to measure the enthalpy of mixing of chloroform and acetone at 14 °c measure the heat required to keep the temperature of the system constant at 14 °c. the measured data is as follows (remember the sign convention if the reaction is exothermic/endothermic): weight % chc13 . heat evolved [j/g] 10 20 30 40 50 60 70 80 90 4.77 9.83 14.31 19.38 23.27 25.53 25.07 21.55 13.56 based on the data supplied, calculate the enthalpy of mixing (amil) vs. the mole fraction of acetone and plot the result.

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.