Lab1....Need 100% grade in this
dexterousThe following questions refer to the Lab Techniques Lab, Parts 1 and 2. For all measurements, record the appropriate significant figures and identify the unit with the appropriate abbreviation. For each data reporting question, indicate what the data corresponds to. For example:
Key 25.4g = 0.0254kg = 25400mg
Question 1 4 pts
Question 2 4 pts
Report the temperatures of the hot water from tap and cold water from tap here. Report the temperature as recorded from the thermometer. Convert each temperature to Celsius, Fahrenheit, and Kelvin, as appropriate. You should report 3 temperatures for each reading.
Question 3 4 pts
Report the actual mass of the key and a combination of coins here. Identify what coins were measured. Convert the recorded mass to mg and kg. There should be two different masses recorded then converted to mg and kg.
Question 4 2 pts
A. While heating two different samples of water at sea level, one boils at 106°C and one boils at 99.0oC. Calculate the percent error for each sample from the theoretical 100.0°C. Show your work for partial credit if you are incorrect.
Question 5 2 pts
Provide the following data from Table 4 in the Lab.
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Mass A |
Mass B |
Mass B - A |
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Liquid |
Volume (mL) |
Graduated Cylinder (g) |
Graduated Cylinder with liquid (g) |
Liquid (g) |
Density g/mL |
% Error |
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Water % Error Complete the data tables for the magnet measurements. Data Table 5. Magnet – Measurement Method.
Data Table 6. Displacement Method.
Data Table 7. Archimedes’ method.
Question 75 pts Gold has a theoretical density is 19.30 g/mL. You are given a small piece of gold colored material and want to determine if it is actually gold. Using the Archimedes Principle you find that the volume is 0.40 cm3 and the mass is 11.4 g. What conclusions can you reach from your simple density analysis? Show your work and include a sentence with your conclusion.
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The following questions refer to the Qualitative Spectrascope lab.
Question 8 2 pts
Hold the grating several inches from your face, at an angle. Look at the grating that you will be using. Record what details you see at the grating surface.
Hold the diffraction grating up to your eye and look through it. Record what you see. Be specific.
Question 914 pts
After mounting the diffraction grating, look through your spectroscope and record what you see across the back of your spectroscope. Be specific.
Starting at the light inlet slit and going outward, what colors do you see in the spectrum? List them all.
When you view the spectrum, you should be able to see a spectral image to the right and left of the light inlet slit. How are the spectral images the same? How are they different? Record your findings.
Try narrowing and widening the light inlet slit. How does this affect the spectra that appear? Compare the shape, thickness, and resolution of the spectral lines before and after narrowing the slit. Record your findings.
The image below is atomic spectra of a few elements. Did any of your observed spectra match any of these elements? Comment on that and conclude if your light sources contained any of these elements.
This is a set of questions where you need to develop a collegiate response and show scientific understanding of your observations.
Question 10 10 pts
Upload a picture of a drawn line spectra for 3 of your light sources (this may be hand drawn with colored pencils, crayons, whatever). Also submit a picture of your spectrascope with the cover open. I would like to see the placement of your diffraction grating and your light scale.