CHEM 1201 LSUE BORILL EXAM 1 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS
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CHEM 1201
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CHEM 1201
CHEM 1201 LSUE BORILL EXAM 1 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The heavier two isotopes have an abundance of 4.68% and 3.09%, respectively. ...
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| Uploaded on: | October 27, 2025 |
| Last updated: | November 17, 2025 |
| Number of pages: | 116 |
| Written in: | 2025/2026 |
| Type: | Exam (elaborations) |
| Contains: | Questions & Answers |
| Tags: | CHEM 1201 LSUE BORILL EXAM 1 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The heavier two isotopes have an abundance of 4.68% and 3.09%, respectively. What is the mass of the element? A) 27.684 amu B) 29.251 amu |
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CHEM 1201 LSUE BORILL EXAM 1 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The heavier two isotopes have an abundance of 4.68% and 3.09%, respectively. What is the mass of the element? A) 27.684 amu B) 29.251 amu C) 28.085 amu D) 30.107 amu E) 28.991 amu - Answer -28.085 amu All of the following will lead to a homogeneous mixture EXCEPT A) sugar and coffee. B) mud and water. C) salt and water. D) ice tea and lemonade. E) vinegar and water. - Answer -mud and water. How are gases different from solids and liquids? A) Gases can only be made up of atoms. B) The particles in a gas attract each other much more strongly than in solids and liquids. C) Gases are compressible. D) Only gases can take the shape of their container. E) Gases are colorless. - Answer -Gases are compressible. A scientific law A) is a brief statement that summarizes past observations and makes predictions. Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: tutorjean01@gmail.com B) is subject to change via legal action. C) contains an explanation of observations. D) must have a mathematical formula. E) cannot be modified. - Answer -is a brief statement that summarizes past observations and makes predictions. All statements about scientific theories are true EXCEPT A) they explain why nature behaves the way it does. B) they must have the ability to make predictions on future behavior. C) they should use observations to test the theory. D) they are derived from hypothesis. E) they are speculation. - Answer -they are speculation A sample of a compound containing only carbon and oxygen decomposes and produces 24.50g of carbon and 32.59g of oxygen. What is the sample? A) CO B) CO2 C) CO3 D) C3O2 E) C2O - Answer -CO Rutherford's Gold Foil Experiment helped prove A) the diameter of a gold atom. B) the exact charge of an electrons. C) the exact mass of a gold atom. D) that the mass of an atom is concentrated in a very small space. E) the mass to charge ratio of an electron. - Answer -that the mass of an atom is concentrated in a very small space. Rank in the order of increasing mass. A) proton, neutron, electron B) neutron, proton, electron C) electron, proton, neutron D) electron, neutron, proton Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: tutorjean01@gmail.com
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