Essay on Lab Technique and Measurments

Next, the data was recorded and was used in the formula to find the density of the 40 pennies.

Measure the mass and calculate the density of the magnet using the correct significant figures and units. Show work for full credit. (2 points)

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

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.

1. Using a metric ruler, determine the length of the items in Table 1.1 below:

Place the plastic bag on the scale. record the information on the graph for initial mass for trial 2

If the water displacement increases, then the density will decrease because the mass will be divided by a higher volume causing a lower density. The independent variable is the water displacement and the dependent

Measured out 2 m (+/- 0.1 cm) on the wall using the meter stick (+/- 0.1 cm) and placed the tiny piece of tape on the 2 m (+/- 0.1 cm) mark.

In the third stage of this experiment, the density of a liquid was determined and compared to known standards. A 100ml beaker was filled to about half-full with room-temperature distilled water. The temperature of the water in ◦C was recorded in order to compare to known standards later. A 50ml beaker was then weighed on a scale in order to determine mass and recorded. A sample of the distilled water with an exact volume of 10ml was then placed in the 50ml beaker using a volumetric pipette. The 50ml beaker with the 10ml of water was then weighed again and the initial mass of the beaker was subtracted from this mass to obtain the mass of the 10ml of water. With the volume and the mass of the water now known, density was calculated using d = m/V and recorded in g/ml. This process was then repeated to check for precision and compared to standard values to check for accuracy. Standard values were obtained from CRC Handbook, 88th Ed.

Magnetism is a very interesting topic. Playing with magnets can be a very fun and interesting thing to do. It is easy to feel a magnetic force when magnets are close together. They are very fun and interesting, but what makes magnets work?

During the metric measurement lab, the objective, also known as the problem statement, was to take measurements of the length, volume, mass, temperature, and circumference of different substances. In addition, we were to convert these measurements using the factor label method and complete calculations based on the measurements we took at the six different stations of the lab. Furthermore, we were directed to compare and contrast our calculations with other groups in the classroom. For station one, we were directed to calculate the dimensions of two rectangular boxes.

7. Place one ball bearing on the other side of the magnet, about 3 cm away.

Tip magnet upside down and observe how many nuts and bolts fall off of the magnet.

2. Remove the beaker from the scale and fill the beaker to a measured and recorded volume of Fresh Mountain Strawberry shampoo.

After that, it is crucial to convert the mass to volume. The water density at a temperature will aid this process. The compliance of the Volume Occupied by 1.000g of Water Weigh in Air table is deemed necessary throughout the comparison.