Straighterline CHEM101 General Chemistry I Graded Exam 1 (New Version June 2024)

Question 1 Correct 5.00 points out of 5.00 Talc is a mineral with low conductivity for heat and electricity which is not attacked by acid. It is used in talcum powder and face powder. Suppose a sample of talc weighs 13.65 g with a density of 1.75 g/cm3 in mineral oil. If this same sample of talc in air weighs 35.97 g, assuming no volume change, what is the density of the talc sample in air? Select one: A. 2.44 g/cm3 B. 2.82 g/cm3 C. 1.61 g/cm3 D. 4.61 g/cm3 E. 2.63 g/cm3 Question 2 Correct 5.00 points out of 5.00 Which of the following represents the greatest mass? Select one: A. 3.0 × 1012 pg B. 2.0 × 103 mg C. 10.0 dg D. 1.0 × 106 µg E. 0.0010 kg Straighterline CHEM101 General Chemistry I Graded Exam 1 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: or : +1 (540) 753-5914. Guaranteed Passing! CHEM101_MH_V6 | Topic 5: Ionic and Covalent Compounds Started on State Finished Completed on Time taken 55 mins 20 secs GradeQuestion 4 Correct 5.00 points out of 5.00 The boiling point for liquid helium is 4.0 K. What is the temperature in degrees Fahrenheit? Select one: A. –452.5°F B. 530.9°F C. –237.2°F D. 131.8°F E. –498.9°F Question 5 Correct 5.00 points out of 5.00 The average distance between Earth and the Moon is 240,000 miles. Express this distance in meters. (1 mi = 1609 m) Select one: A. 5.3 × 105 m B. 1.5 × 105 m C. 6.1 × 105 m D. 3.9 × 108 m E. 9.4 × 104 m How many hertz is 600.11 MHz? Select one: A. 6.0011 × 106 Hz B. 6.0011 × 10–2 Hz C. 6.0011 × 108 Hz D. 6.0011 × 10–4 Hz E. 60.011 Hz Question 3 Correct 5.00 points out of 5.00Question 7 Incorrect 0.00 points out of 5.00 Which one of the following statements about atoms and subatomic particles is correct? Select one: A. The neutron's mass is equal to that of a proton plus an electron. B. A neutral atom contains equal numbers of protons and electrons. C. The proton and the neutron have identical masses. D. An atomic nucleus contains equal numbers of protons and neutrons. E. Rutherford discovered the atomic nucleus by bombarding gold foil with electrons. Question 8 Correct 5.00 points out of 5.00 In the periodic table, atoms are arranged in order of Select one: A. periodicity. B. chemical reactivities. C. physical properties. D. increasing atomic mass. E. increasing atomic number. Iron(III) chloride hexahydrate is used as a coagulant for sewage and industrial wastes. What is its formula? Select one: A. Fe(Cl·6H2O)3 B. Fe3Cl(H2O)6 C. FeCl3·6H2O D. FeCl3(H2O)6 E. Fe3Cl·6H2O Question 6 Incorrect 0.00 points out of 5.00Question 10 Correct 5.00 points out of 5.00 A row of the periodic table is called a(n) Select one: A. subshell. B. isotopic mixture. C. period. D. family. E. group. Question 11 Correct 5.00 points out of 5.00 The electron configuration of a ground-state copper atom is Select one: A. [Ar]3d9. B. [Ar]4s24p63d3. C. [Ar]4s23d9. D. [Ar]4s24d4. E. [Ar]4s13d10. Who discovered the neutron, the subatomic particle having a neutral charge? Select one: A. Chadwick B. Millikan C. Thomson D. Dalton E. Rutherford Question 9 Correct 5.00 points out of 5.00Question 13 Incorrect 0.00 points out of 5.00 The electronic structure 1s22s22p63s23p64s23d8 refers to the ground state of Select one: A. Kr. B. Ni. C. Pd. D. Fe. E. None of these choices is correct. Calculate the de Broglie wavelength of a neutron that has a velocity of 200. cm/s. (mass of a neutron = 1.675 × 10–27 kg and h = 6.63 × 10–34 J • s) Select one: A. 5.05 mm B. 1.8 × 1050 m C. 198 nm D. 216 nm E. 1.98 × 10–9 m Question 12 Correct 5.00 points out of 5.00Question 15 Correct 5.00 points out of 5.00 The orbital diagram for a ground-state nitrogen atom is Select one: A. A B. B C. C D. D E. E Which ground-state atom has an electron configuration described by the following orbital diagram? Select one: A. germanium B. tellurium C. selenium D. phosphorus E. potassium Question 14 Correct 5.00 points out of 5.00Question 17 Correct 5.00 points out of 5.00 An oxide ion, O2–, has Select one: A. 8 protons and 7 electrons. B. 10 protons and 8 electrons. C. 8 protons and 10 electrons. D. 10 protons and 7 electrons. E. 8 protons and 9 electrons. Question 18 Correct 5.00 points out of 5.00 Which of the following is an amphoteric oxide? Select one: A. SO2 B. Na2O C. MgO D. Cl2O7 E. Al2O3 Which one of these ions does not have [Xe] as its electronic configuration? Select one: A. I– B. Sn4+ C. Te2– D. Cs+ E. Ba2+ Question 16 Correct 5.00 points out of 5.00Question 20 Correct 5.00 points out of 5.00 In 1864, the English chemist John Newlands noticed that when the elements were arranged in order of increasing atomic mass, every eighth element had similar properties. Newlands referred to this relationship as the Select one: A. law of orbitals. B. law of octaves. C. law of proportionality. D. law of periodicity. E. law of loopholes. Each of the noble gases has a completely filled p subshell except for which one? Select one: A. Radon B. Argon C. Helium D. Xenon E. Neon Question 19 Correct 5.00 points out of 5.00Select the Lewis structure for XeO2F2 which correctly minimizes formal charges. Select one: A. B. C. D. Question 21 Correct 5.00 points out of 5.00Question 22 Correct 5.00 points out of 5.00 What formal charge resides on the carbon of CO32–? Select one: A. 0 B. +4 C. +1 D. +2 E. +3 Question 23 Correct 5.00 points out of 5.00 How many single bonds are bonded to sulfur in SF6? Select one: A. 2 B. 7 C. 4 D. 6 E. 8 E.Which of these elements is most likely to exhibit an expanded octet in its compounds? Select one: A. O B. Na C. C D. S E. N Question 24 Correct 5.00 points out of 5.00Quiz navigation 1 2 3 4 5 6 7 8 9 10 Show one page at a time Finish review Which of these choices is the best Lewis structure for ozone, O3? Select one: A. B. C. D. E. Question 25 Correct 5.00 points out of 5.00© 2023 StraighterLine. All rights reserved