calcium carbonate. 0.00680 moles CaCO3 x 100 g CaCO3 1 mole CaCO3 = 0.68g CaCO3 Show the calculation of the percent yield. Actual yield/Theoretical yield x 100 (0.5/0.68) x 100 = 73.5% Conclusion: The objectives of this experiment are to predict the amount of product produced in a precipitation reaction using stoichiometry‚ to accurately measure the reactants and products of the reaction‚ to determine the actual yield vs. the theoretical yield and to calculate the percent
Premium Sodium Stoichiometry Measurement
You and I and a couple million other people have all been in schools for a number of years‚ and we all have some pretty good ideas about the qualities we feel are important for good teaching. Not surprising‚ several agencies and organizations have looked into the characteristics of good teachers. One of those is the Interstate New Teacher Assessment and Support Consortium (INTASC). The INTASC establishes guidelines for preparing‚ licensing‚ and certifying educators. Among other things‚ they promote
Free Education Teacher Bulletin board system
system is called a moving average model (MA)‚ and of course a model based on both inputs and outputs is an autoregressive-moving-average model (ARMA). Note that by definition‚ the AR model has only poles while the MA model has only zeros. Several methods and algorithms exist for calculating the coefficients of the AR model‚ all of which are implemented by the matlab command ’ar’. We use the default setting (’forward-backward’) to calculate the AR model for the vocal tract‚ with the following justifications:
Premium Noise Signal processing Mathematics
THE SUBJECT MATTER OF EXPERIMENTS A well-designed experiment tells us that changes in the explanatory variable cause changes in the response variable. More exactly‚ it tells us that this happened for specific subjects in the specific environment of this specific experiment. No doubt we had grander things in mind. We want to proclaim that our new method of teaching math does better for high school students in general or that our new drug beats a placebo for some broad class of patients. Can we
Premium Statistics Experiment Psychology
In this experiment‚ three different test subjects were used in order to look for significant metabolic changes when the test subjects were exposed to different drugs and physiological changes. In this test‚ three different rats were used to see the different metabolic rates when exposed to different drugs and hormones on a normal‚ healthy rat‚ a rat with no thyroid‚ and a rat with no hypophysis. The significance of this experiment is to show the difference in metabolism and metabolic rate in healthy
Premium Animal testing Animal rights Brain
The design of the experiment will include a control group of cells (untreated and treated with only solvent that is used in the extraction
Premium Cancer Oncology Immune system
Introduction The common bean (Phaseolus vulgaris) is a fast growing plant and is used commonly in experiments due to its easy testability. It can grow in a variety of conditions and is easy to see the effects of different treatments. The idea of the treatment that we applied to our bean plants came from our class and scientific papers that help back our experiment. Examining many studies on the effects of nitrogen fertilizer on a variety of plants helped us better understand what the fertilizer was
Premium Plant Seed Water
Milgram’s experiment in 1960 by social psychologist Dr. Stanely Milgram’s (1963‚ 1965) was a controversial experiment. He researched the effect of authority on obedience. I don’t think the scientific community overreacted to this experiment because it is unethical to reduce subjects to "twitching shuttering wrecks". Though the human mind is amazing strong we still do not know its breaking point. For interviewers to carry out the kind of experiment they did‚ they have to be willing to face the consequences
Premium Psychology Stanford prison experiment Ethics
Introduction Milgram Experiment Method 40 men were recruited for a lab experiment investigating “learning”. In exchange for their participation‚ each person was paid $4.50. After the WWII‚ Stanley Milgram a psychologist of Yale University posed a question‚ “Could it be that Eichmann and his million accomplices in the Holocaust were just following orders? Could we call them all accomplices? These men were introduced to another participant who were actually actors. These men were given role
Premium Milgram experiment Psychology Stanford prison experiment
Methods/Theories of Collaboration According to Muneera Spence‚ Oregon State University professor‚ there are four types of collaborative models: collaboration by chance (no structure to team selection); collaboration by acuity (a team of balanced attributes and knowledge); collaboration by interest (a team with similar interests); and collaboration by leader (a team formed by a leader). Merrill Lynch should employ collaboration by acuity as it is the sector and asset knowledge that is the most valuable
Premium Collaboration 2008