Chem 103 exam 2 - Study guides, Class notes & Summaries

CHEM 103 Lab Exam 8 – Portage Learning. The unit “m” stands for _______ in this experiment. 2. (4 points) Why was warming data used for estimating the freezing/melting point of the cyclohexane? 3. (3 points) How much of the cyclohexane solvent was placed in the test? 1.) molarity 2.) It is considered reliable.

Chem 103 Exam 2 Questions with Answers 2024 Updates 100% Correct

Which of the following processes are exothermic: 1) Adding magnesium to a solution of HCl 2) Water freezing on a cherry blossom 3) The reaction of H2 and O2 gases to form water correct answersAll In the "collapsing can" experiment demonstrated in class (where a small amount of water was added to an empty soda can and brought to a boil for several minutes) which of the following statements is false? a) Before heating, the pressure of gas inside the open can was the same as the pressure...

Click this link to access the Periodic Table. This may be helpful throughout the exam. A reaction between HCl and NaOH is being studied in a styrofoam coffee cup with NO lid and the heat given off is measured by means of a thermometer immersed in the reaction mixture. Enter the correct thermochemistry term to describe the item listed. 1. The type of thermochemical process 2. The amount of heat released in the reaction of HCl with NaOH 1. Heat given off = Exothermic process 2. ...

CHEM 103 Module 1 to 6 Exam Questions and Answers (Portage Learning) Convert 845.3 to exponential form and explain your answer. 2. 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 Click this link to access the Periodic Table. This may be helpful throughout the exam. Using the following info...

LATEST CHEM 103 EXAM 2023.100% VERIFIED ANSWERS GRADED A+ (HIGHLY RECOMMEDED) LATEST CHEM 103 EXAM 2023.100% VERIFIED ANSWERS GRADED A+ (HIGHLY RECOMMEDED)

CHEM 103 Module 1 to 6 Exam Questions and Answers (Portage Learning) Show the calculation of the mass of a 18.6 ml sample of freon with density of 1.49 g/ml 2. Show the calculation of the density of crude oil if 26.3 g occupies 30.5 ml. 1. M = D x V = 1.49 x 18.6 = 27.7 g 2. D = M / V = 26.3 / 30.5 = 0.862 g/ml Question 5 Click this link to access the Periodic Table. This may be helpful throughout the exam. 1. 3.0600 contains ? significant figures. 2. 0.0151 contains ? significant figu...

Question 1 Not yet graded / 10 pts Chem 103 Exam Latest Update Questions and Correct Answers Rated A+ Click this link to access the Periodic Table. This may be helpful throughout the exam. Show the calculation of the molecular weight for the following compounds, reporting your answer to 2 places after the decimal. 1. (NH4)2CO3 2. C8H6N O4Br Your Answer: 1. N=28.02 H=8.064 C=12.01 O=48 add =96.09 MW 2. C= 96.08 H=6.048 N=14.01 O=64 Br=79.90 add =260.04 MW 1. 2N + ...

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Chem 103 Practice Test – Module 3 Exam 2023