Nose Cone Lab

What is the Percent by Mass of NaHCO3 in Alka-Seltzer Tablets? Introduction: The moment an Alka-Seltzer tablet hits water, it begins to fizz. These tablets are over-the-counter antacids and pain relief medications that contain aspirin, sodium bicarbonate, and citric acid. The fizzing is a result of a reaction occurring where carbon dioxide (in the form of bubbles), water, and sodium acetate is formed. The fizzing and carbon dioxide bubbles are a result of the sodium bicarbonate splitting and reacting with the citric acid. In this experiment we are determining the percent by mass of sodium bicarbonate (NaHCO3) in Alka-Seltzer tablets and exploring the relationship between amounts of reactants and products.

1. Why are spindle fibers important for mitosis? (5 points) Chromosomes use spindle fibers as pathways to daughter cells during mitosis.

For this study, footballs filled with different gases, with air being the control group and helium, nitrogen, argon, and carbon dioxide being the independent variables, were shot 15 times from a Snap Attack Machine. The hang times in seconds of the footballs were recorded and placed on a spreadsheet in Microsoft Excel. There were 2 experiments. The first experiment had the footballs filled to 6 PSI and the second experiment had the footballs filled to 9 PSI. The change in PSI was suggested by a graduate student, helping the researcher, because the lower PSI in the first experiment caused the Snap Machine to shoot the footballs and produce results all over the place with no precision (see Table 1 and Graph 1). The second experiment provided more precise results because the Snap Machine could shoot the footballs better (see Table 2 and Graph 2). The first experiment results were nullified for the error. The means, standard deviations, and standard errors of

Cutting through the mink to study its anatomy helps the group to realize that they are similar to human. The most important tools used in the lab are scissor, probe, pins, tweezer, and scapula. The most tool being used is scapula which is used to cut up the mink and skin it. Safety materials are required in the lab in order to avoid accident. Since the minks contain cancerous chemicals on them, the classes are required to wear safety goggles, apron, and gloves. The class started the dissection from May 18th to May 27th in third period of Anatomy class.

Question: What will happen to a gummy bear if it is left in water for 24 hours?

Lab 3 Caloric Expenditure Anishka Bagla EXSC 205 Lab 12:00 - 13:50 Thursday Instructor: Tamara Espinet Purpose The purpose of this lab is to gain knowledge and understanding of the scientific principle of RER, using indirect calorimetry to measure caloric expenditure, including the caloric equivalent and to understand the concepts behind estimating oxygen consumption and caloric expenditure from heart rate, including the limitations. In addition the purpose was to learn skills of how to measure and graph the linear relationship between heart rate and VO2 and then determine the regression equation line and to estimate the caloric expenditure from VO2, heart rate, and caloric equivalent values.

3.     What are the advantages and disadvantages of an experimental design in an educational study?

------------------------------------------------- Ricky Vance ------------------------------------------------- Biology 120 Lab ------------------------------------------------- February 1, 2013 ------------------------------------------------- Ricky Vance ------------------------------------------------- Biology 120 Lab ------------------------------------------------- February 1, 2013 Phenotypic Variation of the Stickleback Phenotypic Variation of the Stickleback 2013 2013 Abstract: The purpose of the research was to formulate a question and develop a hypothesis based on the variations observed between two populations of threespine stickleback, in order to gain a better understanding of natural selection

ANALYSIS DATA The greater the incline and greater the height, the greater the acceleration of the cart. -This experiment measured the acceleration of a cart moving down a sloped track in order to find a relation between the acceleration of an object and the sine of the angle at which it is moving. There were three separate experimental stages, with the variable being the angle at which the

Introduction: The purpose of this lab was to learn the proper techniques of roasting, smelting, and volumetric analysis to determine an unknown sample of copper mineral.

Figure 1. Results recorded from experiment. After every 15 seconds for four minutes, the absorbance was recorded.

It is time to take measurements and collect data. Take a ruler and measure the height of both eggs. The take a bit of yarn (enough to wrap around the eggs) and wrap the yarn around both eggs separately to get their individual circumferences. Then place both eggs on the grams scale individually to get their weights. Observe their color and shape to get some qualitative data. Rinse the beakers and fill both with 125 ml of water each. Place one egg in a beaker and place the other egg in the other beaker. Record the density by subtracting the current reading of water in the cup by the original amount of water in the beaker. To begin the experiment, remove the egg shells from the eggs. Take one beaker and fill it with 100 ml of vinegar. Take

YEAR 11 PHYSICS CRUMPLE ZONE PHYSICS EEI FORMAT GUIDE AND LINKS TO CRITERIA 0.0 Abstract ( A short summary of the experimental investigation and its conclusions. It includes a statement of the aim, short description of the method, main results and a conclusion and implications or recommendations.) (KCU 1)

Judy Vang Professor Aaron Biol-5-20345, MW 12:30-11:45am 1 Sep. 2016 Senses Pre-lab 1. What is the basic function of a sensory receptor? What are the different types of receptors and what are their functions?

Inside a morbid place was the living and the dead. The pathologist, a burly bearded bifocal wearing man, had scheduled cadaver 9252012 for autopsy that day. It was stored inside drawer F, one of twenty-one refrigerated cabinets. It is a grim place, the laboratory where these butcheries are conducted. Lingering in the air is the foul stench of death, the chemicals used to suppress the ghastly odor only intensifying it, rendering a fusion of ammonia, chlorine and rot. Positioned in the center of the room is a cadaver dissection table, a polished slab of steel surrounded by troughs to catch the oozing blood and bodily fluids that escape the corpses during the process. Detective Ron Burlingame of the Lake City, Florida Police Department, requested