Research Question: How does the number of sit-ups affect your heart rate. Independent Variable (IV): Number of sit-ups ( 0‚5‚10‚15‚20). I chose these 5 increments because they are consistent numbers in which everyone can participate without it being to much. Dependent Variable: heart rate( BPM) +/- 4 ( number of beats in 15 seconds multiplied by 4). Materials: timer‚ flat surface‚ movable clothing Background: In this experiment I will test your heart rate and if it increases or decreases with exercise
Premium Exercise Heart Heart rate
Analysis of a Volatile Liquid Abstract: The purpose of this experiment was to use various methods of analysis to determine the identity of an unknown volatile liquid. In the first part of the experiment‚ the molecular mass was found by using water to find the volume of a flask through calculations and this as well as the mass of the gas of the unknown liquid were put into the a manipulated version of the ideal gas equation to determine the molar mass of the liquid‚ which was 14.21g per
Free Gas Temperature Pressure
spectrophotometer at 605nm‚ and the rate of linear decrease in absorbance over time represents the number of electrons flowing through the electron transport chain reflecting the relative rate of photosynthesis. Chloroplasts only absorb certain wavelengths in the electromagnetic spectrum‚ the blue followed by the red are the two main wavelengths absorbed (Melis‚ et al.‚ 1987). The experiment was designed to investigate which wavelengths would result in the highest rate of photosynthesis. Chlorophyll a
Premium Photosynthesis Light Chlorophyll
Effect of Varying Temperatures: The enzyme catalyzed reaction rate during varying incubation temperatures are plotted on Figure. 6. As the temperature increases the rate increases‚ but as the temperature reaches 49oC it begins to drop. When the plot of the logarithm of the rate is used against the inverse of the temperature kelvin’s the Arrhenius equation is used to calculate the activation energy. The range in orange is between 16.5 - 37oC and the activation energy is calculated to be 9332kcal/mol
Premium Chemical reaction Enzyme Temperature
Graded Assignment Honors Project 1: Liquid Breathing Write the final draft of your project. Be sure to follow these requirements and recommendations when completing your draft: • Open a new Microsoft Word document. Type your name‚ your teacher’s name‚ your school name‚ and the date at the top of your document. To help your teacher know from whom the project came‚ save the file as: CHEM_304B_10_01_Honors_Project_1_Final_Draft_FirstInitial_LastName.doc
Premium Oxygen Scuba diving Microsoft Word
results a final conclusion can be drawn. The hypothesis was supported by graph 3 and 6 which both showed that an increase in concentration of the reacting species resulted in an increase in reaction rate. Both graphs have a positive gradient which clearly indicates that concentration increases the reaction rate. The hypothesis also proposed that as temperature increases the speed of the reaction would decrease‚ this is evidenced in graph 7 which shows a negative decrease in time as the temperature of the
Premium Chemical reaction Chemistry Reaction rate
Liquid crystal display Reflective twisted nematic liquid crystal display. 1. Polarizing filter film with a vertical axis to polarize light as it enters. 2. Glass substrate with ITO electrodes. The shapes of these electrodes will determine the shapes that will appear when the LCD is turned ON. Vertical ridges etched on the surface are smooth. 3. Twisted nematic liquid crystal. 4. Glass substrate with common electrode film (ITO) with horizontal ridges to line up with the horizontal
Premium Liquid crystal display Cathode ray tube Liquid crystal
were going to be most active at the 41ᵒC which is close to human body temperature. When we compare the enzyme in the low temperatures to the enzymes in the higher temperature we observed that the enzymes were functioning at a significantly reduced rate at the 24ᵒC temperature and was completely inactive at the 0ᵒC temperature. Whereas when we compare to the higher temperatures (60ᵒC) the enzymes should have functioned with reduced efficiency and should have even denatured which would
Premium Enzyme Chemical reaction Energy
Objective:- The aim of this experiment was to find the molar mass of unknown volatile liquid under known temperature and pressure. Introduction Molar mass or gram molar mass is the mass of the substance under consideration without distinguishing whether a substance is an element ‚ a molecule or an ionic compound. These elements‚ molecules or ionic compound could be solid gas or liquid. The molar mass of gas or vapor could be measured if the gases obey the law of Ideal Gas . The mass of
Free Gas
Pulse rate During the practical while at rest the pulse is at a normal speed as the person is not doing any activity which requires lots of energy. This changes when the person starts to exercise as the line on the graph increases‚ this shows that the pulse rate is increasing because the heart is beating faster to make sure enough oxygen reaches the cells‚ this also causes the breathing to increase as the body has to take in more oxygen to supply the body and remove the carbon dioxide. In the body
Premium Heart Blood Muscle