O chem 1 - Study guides, Class notes & Summaries

MSAP Bio chem 1: DNA questions and answers A+ grade assured 2024/2025

Chem 111 General Chemistry 1 Practice Test #3 (Chapter 6 & 7) 50 Questions with Verified Answers 1. Which one of the following statements about balanced equations is TRUE? A reaction is balanced by A) multiplying by suitable coefficients B) changing the formula of the molecule C) changing the charge of an ion D) rearranging atoms in a molecule - CORRECT ANSWER A) multiplying by suitable coefficients 2. What is the stoichiometric coefficient for oxygen when the following equati...

CHEM 131: Introduction to Chemistry with Lab Test | Complete Guide 2023 Rated 100%. What is the volume in mL of a cube of water with dimensions 11.0 cm × 11.0 cm × 11.0 cm ? A.1.33 × 103 B.1.3 × 103 C.1.33 × 10-3 D.1.331 × 10-3 E.none of the above Answer Key: A Feedback: This is discussed in section 2.8 in the text. Question 5 of 12 0.0/ 4.0 Points When the value 98.54 is rounded to two significant figures, the number should be reported as: A.98 B.98.5 C.99 D.100 E.none of t...

CHEM 1010 - Module 1 Introduction to Chemistry with complete verified solutions

CHEM 131 Introduction to Chemistry with Lab Test Complete Guide 2023/2024 Rated A+. Who discovered the atomic theory? A.Antoine Lavoisier B.John Dalton C.John Dalton and Antoine Lavoisier D.Albert Einstein E.none of the above Answer Key: B Feedback: Good! It was Dalton. Question 2 of 12 4.0/ 4.0 Points Who discovered the law of conservation of mass? A.Albert Einstein B.John Dalton and Antoine Lavoisier C.Antoine Lavoisier D.John Dalton E.none of the above Answer Key: C Feedback: ...

Portage Learning / CHEM 104 / Module 1 to 6 Exams . MODULE 1 EXAM Question 1 Convert 845.3 to exponential form and explain your answer. 1. Convert 3.21 x 10-5 to ordinary form and explain your answer. 1. Convert 845.3 = larger than 1 = positive exponent, move decimal 2 places = 8.453 x 102 2. Convert 3.21 x 10-5 = negative exponent = smaller than 1, move decimal 5 places = 0. Question 2 Using the following information, do the conversions shown below, showing all work:...

CHEM 103 Lab Exam 3 – Portage Learning. A 1.1000 gram hydrate sample chosen from Na2CO3∙10H2O, AlCl3∙6H2O, MgCl2∙6H2O and BaCl2∙2H2O was heated and found to lose 0.5841 gram of H2O. (1) Show the calculation of the % H2O in the unknown hydrate sample. (2) Show the calculation of the % H2O in each of the hydrate compounds and identify the unknown hydrate from the list. Atomic weights: H = 1.008, O = 16.00. MWs: Na2CO3∙10H2O = 286.15, AlCl3∙6H2O = 241.43, MgCl2∙6H2O = 203.301 ...

CHEM 334 Final Exam Questions and Answers, Latest Updated 2024/2025 | 100% Correct Answers. Write accurate structures for the following: CHEM 334 Final Exam Questions and Answers, Latest Updated 2024/2025 | 100% Correct Answers 8/6/22, 10:11 PM Final Exam 2/4 a) the conjugate base of 1-propyne b) a compound of formula C3H4O with ONLY sp2 carbons c) a good 3-dimensional structure for NH2OH (including lone pairs) d) a Newman diagram of anti 1-propanol e) a bicycloheptane of formula C7H12...

CHEM 219 Module 1 Problem Set Principles of Organic Chemistry with Lab Gallaher Portage Learning. Score for this quiz: 10 out of 10 Submitted Jul 25 at 8:42pm This attempt took 1,135 minutes. Question 1 0 / 0 pts Your Answer: On a piece of scratch paper, write out the Lewis Dot Diagram for each of the indicated elements and determine the following for each: a) The number of Lone Pairs the atom possesses in its valence shell. b) The number of Unpaired Electrons the atom possesses in its...

Portage Learning CHEM 210 Module 2 Exam Questions With Answers Latest Updated (Graded A+) The pH of a solution of 8.9 x 10-12 M NaOH is: A. 8.9 B. 8.9 x 10-12 C. 4.8 D. 11 E. 2.9 Question 1 Portage Learning CHEM 210 Module 2 Exam Questions With Answers Latest Updated 2024- 2025 (Graded A+) ABC Question 2 D E [Kw=[H+][OH-] = 1.0 x 10-14; [H+][8.9 x 10-12] = 1.0 x 10-14 ;[H+]=890; pH=-log[890]=2.9] Which attribute contributes to water’s unusual properties? The geometry of the m...