(01.02 MC) Sue used the following method to convert 5 g/gal to oz/m3.(1 gal = 0.00378541 m3 and 1 oz = 28.3495 g)What is the error in Sue’s conversion method?

(02.03 MC) An electron is present at an energy level with an energy of 16.32 x 10−19 J. During a transition to another level, 5.4 x 10−19 J of energy was absorbed. Which of the following is true about the present state of the electron?

(02.03 MC) An electron is present at an energy level with an energy of 5.44 x 10−19 J. After a second, the electron is present at an energy level with energy, 2.4 x 10−19 J. What most likely happened during the transition?

(01.02 LC) A chemist reported that carbon dioxide gas at −78 °C was kept in the laboratory. Which property of the gas did the chemist report?

(02.01 MC) Which of the following explains how one of the postulates in John Dalton’s atomic theory was later strengthened?

(01.03 LC) At which of the following temperatures is the average kinetic energy of the molecules of a substance the greatest?

(02.01 MC) The diagram shows the different models of the atom that eventually led to the modern atomic theory.Which model was proposed as a result of Rutherford’s scattering experiment where positive particles did not pass straight through a foil as expected?

(01.04 LC) It was observed that the atoms of a substance had so much energy that it separated the electrons and protons of the atom. What is most likely the state of matter of the substance?

(01.02 MC) Dan used the following method to convert 27.7778 cm/s to km/h.(1 km = 100,000 cm and 1 s = 0.000277778 h)What is the error in Dan’s conversion method?

(01.04 MC) A student described two properties of a substance as shown. Properties of Substance Property Description X The substance catches fire easily. Y A substance spontaneously explodes when exposed to other substances. Which of the following is true about the two properties described in the table?