Figure 2 shows a circuit with a resistor R = 1.0 × 103 Ω, and a battery with potential difference of VB = 5.0V . (a) Solve the circuit in Figure 2. That is, find all unknown currents, voltages, and resistances. (b) What is the direction of the current? Note: I want the direction of the conventional current.
Experiment 1: Pressure, Temperature, and Velocity Measurement Objective: The objective of this experiment is to determine the pressure and density of laboratory air, calibrate a pressure transducer and scannivalve, then determine the test section speed as a function of fan speed using three methods of velocity measurement. Equipment: Absolute pressure transducer, digital thermometer, pressure transducer (voltmeter), micromanometer, scannivalve, Pitot tube, low-speed wind tunnel. Part 1: Measurement of Atmospheric Pressure and Density 1. Read the barometer and wind-tunnel thermocouple. 2.
Experiment: Ionic Reactions Derrick Davis Lab partner: None Location: My house Date Performed 19 Mar 15; 0800 CHE111-CO2 Abstract: The goal of this experiment was to work with Ionic substances. The purpose of this experiment was to study and apply the nature of ionic reactions, write balanced equations, and gain a detailed view of the results of the reactions. In this lab we were able to identify some of the characteristics of anions and cations. I was a able to successfully perform the flame test to identify cations as well as identifications of the anion reactions of an ionic compound. Experiment and Observation: Please note that this procedure was adapted from the “Anions, Cations, and Ionic Reactions” LabPaq Lab manual (Hands-On Labs Version 42-0304-82-00-01, 2015) Please reference this manual for further information on the lab experiments.
3) Write equations to indicate what you consider to have happened in each case in which there was precipitate formed. Use ions to represent the species in the reacting solutions, but for those products that were precipitates write a formula for the compound. Place (aq) after those species in solution and (s) after the precipitates. Be sure to write the equations so that both atoms and charge are conserved. For example: Ag+(aq) + NO3-(aq) + Na+(aq) + Cl-(aq) ( AgCl(s) + Na+(aq) + NO3-(aq) 4) Rewrite the equations, leaving out the ions not involved in the reaction (spectators).
| | |Series circuits |Check that Show current is on. | | | |Build the circuit shown to the right. | | Question: In a series circuit, components are arranged in a single loop. What are the characteristics of series circuits? 1.
Limit your implementation to only 2-input AND gates (74LS08), 2-input OR gates (74LS32), and inverters (74LS04). 4. Using the CDS, enter and test your un-simplified Majority Vote – Voting Machine. Use switches for the inputs P, V, S, & T and a probe or LED circuit for the output Decision. Verify that the circuit is working as expected.
Experiment 3: Copper Cycle Purpose Statement In the experiment 3, I need to synthesis a number of copper compounds and need to recover copper metal. Before I can synthesis a number of copper compounds and recover copper metal, I need to collect all the observation, physical properties and solutions through the copper cycle, after that I can synthesis a number of copper compound. When I can synthesis a number of compound I can recover copper metal by weighting an empty weighing bottle and solutions from above experiment (copper that I collect from the copper (I) compound experiment and copper cycle). Data Table Table 3.1: Reagents used in the copper cycle and in the preparation of copper (I) solids Reagent | Appearance | Volume (mL) or Mass (g) | Concentration (M) | Cu(NO3)2 | Light blue, transparent | 10.0 mL | 0.10 | NaOH | Clear (colourless), transparent | 20.0 mL | 2.00 | HCl | Clear (colourless), transparent | 40 drops ~ 1.3 mL | 6.00 | NH3 | Clear (colourless), transparent | 50 drops ~ 1.7 mL | 6.00 | H2SO4 | Clear (colourless), transparent | 15.0 mL | 1.50 | Zinc dust | Silver, solid, very thin layer, shiny | 0.14 g | N/A | Ethanol | Clear (colourless), transparent, odour (alcohol) | 5.0 mL | N/A | CuCl2 • 2H2O | Green,
Jose Flores 6th period 1-27-14 LAB REPORT Introduction: A substance can conduct an electrical current if it is made of positively charged and negatively charged particles that are free to move about and is called a conductor. The purpose is to figure out conductivity of substances and to check which one conducts electricity. The hypothesis is that sucrose would be the only one that could not conduct out of the other six solutions. Materials: The materials used in this lab where six solutions , napkins, 2 pairs of gloves, 2 cups (1 cup with distilled water and 1 cup with solid NaCI) and a conductivity meter. The six solutions are sodium chloride, hydrochloric acid, sodium hydroxide, acetic acid, ammonia and sucrose.
The first example is calculating empirical formulas from percent compositions using the percents of the different elements. Empirical formulas of compounds are also determined through quantitative analysis by using the masses of each element in the equation3. Lastly, this experiment uses the method of finding empirical formulas through combustion analysis. The empirical formula of magnesium oxide is found from the combustion of magnesium1. The four chemical equations that result when metal magnesium is heated in a closed crucible that becomes gradually exposed to the oxygen in the air are shown in table
PHYS 222 Worksheet 5 – Electric Potential Supplemental Instruction Iowa State University Useful Equations Leader: Course: Instructor: Date: Alek Jerauld PHYS 222 Dr. Paula Herrera-Siklódy 1/24/12 Wab (Ub U a ) qq U k 0 r q U kq0 i i ri U q V k q0 r q V k i i ri dq V k r Work done by a conservative force Electric potential energy by two point charges q and q0 Potential energy of charge q0 due to the collection of charges qi Potential due to a point charge. Units: [ 1 V = 1 volt = 1 J/C] Potential due to a collection of point charges Potential due to a continuous distribution of charge Potential difference as an integral of E E in terms of V. E is the gradient of V. Vb Va E dl a b E V Diagrams