Chem 2 lab 3 - Study guides, Class notes & Summaries

CHEM 103 Lab Exam 1 – Portage Learning. What device is used to smother small fires? 1.) beaker 2.) glass is strong combat things like acid and other kinds of harsh stuff. It is neutral with most lab chemicals. 3.) tongs. 4.) watch glass

CHEM 103 Lab Exam 2 – Portage Learning. The reaction of AgNO with Cu is a single displacement type reaction. During the reaction of AgNO with Cu a blue (color) solution and black/gray (color) solid are formed. 3 3 single displacement

CHEM 103 Lab Exam 8 – Portage Learning. 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. It is a dependable predicator of the freezing/melting point of a substnace. it can determine the temperatures when the change occurs.

LSU 2024 CHEM 1212 Chemistry Lab Midterm experiment 1 to 20 Louisiana State University Experiment 1: Physical and Chemical Properties Experiment 2: Classifying Reactions in the Copper Cycle Experiment 3: Synthesis of Copper II Saccharinate Experiment 4: Limiting Reagent Determination Experiment 5: Citric Acid in Fruit Juices Experiment 6: Vitamin C in Fruit Juices Experiment 7: Investigating Conductivities of Aqueous Solutions and Conductimetric Titration Experiment 8: Determining % Comp...

CHEM 103 Lab Exam 4 – Portage Learning. 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? Answer: 1. The heat depends on the amount of substance. If the amount of substance is doubled, then the heat doubles. Other propertie...

Chem 103 Lab Exam 5 Review Question 1 8 / 10 pts 1. (2 points) In the Boyle’s law experiment, what pressure unit was used to gauge the pressure? 2. (2 points) According to Boyle’s law, as the volume of a gas increases, the pressure . 3. (6 points) A sample of gas occupies a volume of 10.5 L when the pressure is 14.3 psi. Use Boyle’s Law to calculate the volume (L) when the pressure is increased to 19.6psi. Show the calculation. Your Answer: Millimeters of mercu...

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 ...