Find the volume of 2.40 mol of gas whose temperature is 50.0 °C and whose pressure is 202 kPa. 6. How many moles of gas are contained in a 50.0 L cylinder at a pressure of 10100 kPa and a temperature of 35.0 °C? 7. Determine the number of grams of carbon dioxide in a 450.6 mL tank at 1.80 atm and minus 50.5 °C.
Therefore, the purpose of the large surface area the alveoli have is to increase the rate at which oxygen is diffused. The large surface area is also used for energy storage, faster removal of toxins from the blood as well as to store oxygen for future use. http://www.ask.com/question/why-do-alveoli-have-a-large-surface-area There are millions of alveoli within each lung therefore providing a larger surface area for gas exchange to occur. With having this large surface area, diffusion increases. One of the 4 main features alveoli have for it to adapt to gas exchange is the requirement of obtaining a large surface area.
Introduction: Cellular Respiration is a process in which glucose is broken down to produce energy in the form of ATP. One of the products of cellular respiration is carbon dioxide. As cells produce carbon dioxide during cellular respiration, it is carried by the blood cells to the lungs where it is exhaled. To be able to test the rate of carbon dioxide, we use Bromothymol Blue, a chemical indicator that changes color as the pH of a solution changes. In a neutral solution, such as water, Bromothymol Blue is blue in color.
The brain of Russian novelist Turgenev weighed 2021 gm (81 oz), Bismark’s weighed 1807 gm (72 oz), while that of French statesman Gambetta was only 1294 gm (51 oz). Einstein’s brain was of average size. * Interesting Facts is that Your muscles make up about one-half of your body weight. * About half of the bones in the human body are located in the hands and feet. * An adult human heart weighs about 10 ounces and beats over 100,000 times a day.
4. Chlorine, Cl 2, is a strong oxidizing agent found in bleach. 10.0 cm3 of bleach solution was added to 25.0 cm3 of 0.4M Sn2+ solution acidified with sulphuric acid and made up to 100 cm3. 10.0 cm3 of the resulting solution containing the unreacted Sn2+ was titrated against 0.02M K2Cr2O7. Given that 11.40 cm3 of K2Cr2O7 was required for complete oxidation, a) Calculate the numbers of moles of Cr2O7- used.
The effects of aerobic and anaerobic respiration on the heart rate Introduction In this experiment i will be investigating the effects of aerobic and anaerobic exercises on people’s recovery rate. Respiration is a series of reactions in which energy is released from glucose. There are two different types of respiration which will be mentioned: aerobic respiration and anaerobic respiration. Aerobic respiration is a process of cellular respiration that uses oxygen in order to break down molecules, which then release electrons creating energy. In the process, aerobic respiration creates a substance known as adenosine triphosphate (ATP).
From the above equation, 5 moles of Fe is formed for every 1 mole of Mno4 ∴ The number of moles of Fe= No of moles of MnO4- * 5 = 4.33 * 10-4 * 5= 2.166 * 10-4 3. In 25cm3 the no. of moles are= 2.166 * 10-4 In 250cm3 the no of moles of Fe = 2.166 * 10-4 * 5 = 0.02166 4. Mass of
The eudiometer will show the displacement of the water in volume of CO2. Hypothesis: I predict that the greater the concentration of hydrochloric acid, the greater the rate of reaction and so more carbon dioxide will be produced in the same time period than at lower concentrations. I predict this because there will be more collisions between the calcium carbonate and hydrochloric acid. Variable Factors Reasons Control 1.Time duration of experiment 2. Mass of Marble Chips 3.Surface Area of Marble Chips 4..
This is due to a basic theory; an increase in temperature increases the kinetic energy of a molecule, causing increased molecular movement. This principle is embraced in diffusion. Diffusion is the net movement of molecules from a high to low concentration. An increase in temperature will result in an increase in the molecules’ kinetic energy, which allows the molecules to move faster therefore speeding up the rate of diffusion. For example, rate of gas exchange in organism will increase; more oxygen will diffuse into the cells and more carbon dioxide will diffuse back out into blood to be removed.
When exercising the cardiovascular system has different functions during exercise , such as it delivers oxygen to working muscles, oxygenates blood by returning it to the lungs, transports heat from the core to the skin, it delivers nutrients and fuel to active tissues and I also transports hormones . Exercising is known as an increased demand on the cardiovascular system. Oxygen demand by the muscles increases sharply. Metabolic processes speeds up and more waste is created. More nutrients are used and body temperature rises.