Self Critique Essays

Self Critique Essays Self Critique Paper Self Critique Paper For many people public speaking is a very stressful task, which causes a lot of psychological pressure and anxiety. On the other hand, speaking in front of an audience is always a great challenge. Therefore, it is hard to find a person, who does not want to become a good, interesting and inspiring public speaker. Proficiency in public speaking is not only an effective tool for personal advancement, growth and development. It is also an important requirement of our contemporary life and informational culture. Usually I feel a little bit frightened before and during my public speaking. As I have discovered from my recent practices, I am extremely sensitive to reaction of the audience on my speech. If my listeners obviously like and enjoy my subject and the way I present it, I feel very much inspired and enthused. But when my audience does not express interest or appreciation of my efforts, it makes me feel frightened, so I can slightly start loosing my self-possession. I guess, my strong points are good pronunciation, good skills in expressing my thoughts and ideas clearly, as well as positive attitude towards my audience. If I have some time to get ready for public speaking, to prepare the draft of my speech and put my thoughts in order, I guess my performance is successful and quite pleasant. Probably, I just need to improve psychological background and learn how to remain calm and self-controlled. It proved to be very interesting to speak in front of the audience. Besides, I was really impressed with the performances of my class-mates as public speakers. Many of them demonstrated unrivaled eloquence, which was quite surprising to me. In addition, I’ve learnt that humor and optimistic tone of the speech are among the key points of successful public speaking. I see that after just one week of practices I could improve my presentation skills and competence in public speaking to a great extent. After giving presentation in front of the audience, I have learnt how to organize my speech more effectively, how to behave when speaking and how to reveal no anxiety and uncertainty. This experience assisted me in becoming considerably more self-confident and comfortable when speaking in public. I believe that with the help of these special practices I’ll achieve prompt progress and learn to enjoy my public speaking.

How to Calculate Density of a Gas

How to Calculate Density of a Gas Density is mass per unit volume. Finding the density of a gas is the same as finding the density of a solid or liquid. You have to know the mass and the volume of the gas. The tricky part with gases is that you are often given pressures and temperatures with no mention of volume. You have to figure it out from the other information. This example problem will show how to calculate density of a gas when given the type of gas, the pressure, and the temperature. Question: What is the density of oxygen gas at 5 atm and 27  °C? First, lets write down what we know: Gas is oxygen gas or O2.Pressure is 5 atmTemperature is 27  °C Lets start with the Ideal Gas Law formula. PV nRT whereP pressureV volumen number of moles of gasR gas constant (0.0821 L ·atm/mol ·K)T absolute temperature If we solve the equation for volume, we get: V (nRT)/P We know everything we need to find the volume now except the number of moles of gas. To find this, remember the relationship between number of moles and mass. n m/MM wheren number of moles of gasm mass of gasMM molecular mass of the gas This is helpful since we needed to find the mass and we know the molecular mass of oxygen gas. If we substitute for n in the first equation, we get: V (mRT)/(MMP) Divide both sides by m: V/m (RT)/(MMP) But density is m/V, so flip the equation over to get: m/V (MMP)/(RT) density of the gas. Now we need to insert the values we know. MM of oxygen gas or O2 is 1616 32 grams/moleP 5 atmT 27  °C, but we need absolute temperature.TK TC 273T 27 273 300 K m/V (32 g/mol  Ã‚ · 5 atm)/(0.0821 L ·atm/mol ·K  · 300 K)m/V 160/24.63 g/Lm/V 6.5 g/L Answer: The density of the oxygen gas is 6.5 g/L.