Chem 103 quiz 4 - Study guides, Class notes & Summaries

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 103 Quiz 4

chem 103 portage learning lab exam 1 general chemistry 20223/10/22, 8:50 AM Lab Exam 1 - Requires Respondus LockDown Browser + Webcam: General Chemistry I w/Lab-2021- Kozminski Attempt Time Score LATEST Attempt 1 25 minutes 23.5 out of 30 Score for this quiz: 23.5 out of 30 Submitted Mar 9 at 11:10pm This attempt took 25 minutes. Ques 6 / 10 pts tion 1 Scientific Calculator ( Answer the following five questions: 1. What is the device shown below? 2. What is the wire device put under co...

Chem 103 Lab Exam 3 Review Question 1 10 / 10 pts Answer the following two questions: 1. Why was the paper chromatogram sprayed with ninhydrin solution in the chromatogram experiment? 2. Why was no peak for Hydrogen present in the SEM spectrum for aspirin (C9H8O9)? Your Answer: paper chromatogram sprayed with ninhydrin solution because it reacts with amino acids because amino acids are colorless and color compounds are formed allowing us to visualize the spots. ...

Chem 103 Lab Exam 4 Review Question 1 10 / 10 pts 1. (3 points) What does it mean that the heat of a reaction is an extensive property? 2. (3 points) Does the following reaction give off heat or absorb heat? Explain briefly. C D H = +263Kcal/mol 3. (4 points) In one experiment in the video, room temperature water was mixed with water at about 38 degrees. To what temperature (about) did the mixture of the two water samples come to after setting for a few minutes? Your An...