Lab We Use A Metal Compass Essay

When the pH is not at its optimum, the differing pH's will disrupt the bonding between the R groups of the amino acid causing its structure and the shape of the activation site to change

Purpose: To become familiar with the International System of Units and common laboratory equipment and techniques. To learn how to determine volume, mass, length, and temperature of a wide variety of items. To learn how to calculate density and concentration of dilutions.

Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.

In this experiment, the signal generator was set so that the frequency meter showed a reading of 1,803 Hz. The microphone was moved to a distance from the speaker so that the oscilloscope displayed a straight diagonal line. This position was of the microphone was recorded as the initial position, or beginning of a wavelength. The microphone was then moved farther in the same direction until the oscilloscope displays the same horizontal line. This position was recorded as final position, or the end of the wavelength. The distance between the two positions represents one wavelength for this frequency. This was repeated for frequencies of 2,402 Hz, 3,002, Hz, 3,602 Hz, and 4,201 Hz.

A. Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C, what could be the reason?

Using Gravitational Force as a Measurement Tool Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Dont forget to save your lab report to your computer Activity 1 Record your data from Activity 1 in the boxes below. Enter the data for the sample you used in each trial (5000 rpm, 10000 rpm, etc) in the appropriate columns and the corresponding g-force, number of layers, and position of layers position results. You will need to use the following formula to assist with your laboratory report G-force 0 00001118 x radius of centrifuge arm x (rpm)2 The radius of the centrifuge arm for this instrument is 10 cm. Speed 5000 rpm 10000 rpm 15000 rpm

-The more dissolved oxygen in the water, the more fish is observed in that area of water.

C. An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide.

When you are doing the displacement method there can be an error on how much volume of water you accurately pour in.

Some of the food in the cafeteria is sourced locally, reducing the amount of fuel used to bring it to campus.

This purpose of this experiment is to calculate the thickness of a sheet of aluminum foil. This experiment is necessary because the human eye cannot accurately measure the small thickness of aluminum foil with only a ruler. However, to understand the procedure one needs to understand conversion, density, and volume. Conversion is when one converts one unit to another unit using a conversion factor(e.g. 2.54cm/in). Density is how much mass there is in a certain volume(density=mass/volume) and it stays constant in a substances and mixtures that have the same composition. Volume is the amount of space that an object occupies. The experiment will consist of weighing of aluminum foil, measuring the length and width, then converting these values

The subject perceived two points most easily on the fingertip (3mm) and less readily on the back (16mm) (Table 1). Location Minimum distance to feel two points (mm) Palm 6 Back of Hand 15 Fingertip 3 Back of Forearm 12 Back 16 Table 1: Minimum distance for two-point

Will increasing the amount of nails on an electromagnet effect the strength of the magnet? Over all, the minimum amount of paper clips the electromagnet collected was two clips. The maximum amount included 20 paperclips. 8.5 was the median, along with a mean or average totaling ten paperclips. The mode was not applicable as no mode was observed.

The density of touch receptors varies with location on the body. The fingertips, toes, and lips have the greatest density. These areas of the body have the highest tactile resolution: the ability to discriminate between one and two points of stimulation.

This could be prevented if the person who is counting the oscillations also times them themselves.