trying to find out what is in a substance. In this case we are using the flame test to try and discover what is in 4 unknown sample solutions that we have been given this is done by cross referencing the colour of the flame with 6 known solutions we test beforehand. Aim- In this experiment we are attempting to distinguish what substances are in the 4 unknown solutions by cross referencing with the 6 known solutions we test beforehand. Assumption- Not applicable for this experiment as we would have
Premium Scientific method Chemistry Experiment
CHI-SQUARE TEST (χ²): Chi-square is a statistical test commonly used to compare observed data with data we would expect to obtain according to a specific hypothesis. For example‚ if‚ according to Mendel’s laws‚ you expected 10 of 20 offspring from a cross to be male and the actual observed number was 8 males‚ then you might want to know about the "goodness to fit" between the observed and expected. Were the deviations (differences between observed and expected) the result of chance‚ or were they
Premium Variance Statistical significance Errors and residuals in statistics
This article explains how to make tests of hypothesis about experiments with more than two possible outcomes (or categories). Such experiments‚ called multinomial experiments‚ possess four characteristics. Note that a binomial experiment is a special case of a multinomial experiment. An experiment with the following characteristics is called a multinomial experiment. 1. It consists of n identical trials (repetitions). 2. Each trial results in one of k possible outcomes (or categories)‚ where k
Premium Hypothesis Theory Null hypothesis
and Benedicts Soloution (heated) The test tube was heated for 5-6 minutes. After 2 minutes of making sure it was nothing was going to change after heating‚ it was clear that there was no change had occurred with the benedict’s solution. The benedicts solution stayed a light blue color when added to the strong starch solution‚ and continued to stay the same color after heated. This indicates no simple sugars present. 3 Weak starch‚ saliva‚ iodine The test tube was held underneath the armpit for
Premium Starch Enzyme Glucose
percent‚ barely over half of the content. Afterwards‚ that individual must attend the workforce‚ with at least sixty percent of their education retained (or higher. Most people score higher‚ but some barely reach this mark to pass). Standardized tests determine the future of someone‚ but yet they don’t seek to apply skills learned in an education to a real world scenario. After a student scores with a sixty percent they move on even deeper into the system‚ (with barely half of the total knowledge
Premium Learning Education Standardized test
indicator is 0.53V. (n = 2) What is the useful voltage range of this indicator? (B) Starch indicators are useful when iodine titrations (organic oxidations) are performed. Why is it considered an advantage in these titrations to have iodine as the titrant instead of the analyte? 3. An environmental chemist is going to field test the chemical oxygen demand factor for a stream in Yellowstone Park.
Free Titration
Aptitude test 1. Find the nest term in series ? 25 16 9 4 1 0 ? Ans. (-1)2 = 1 2. If (NM)2= RRM where N.M & R are distinct digits. Then possible values for R are (a) 1 (b) 2 (c) 3 (d) none of these Ans (b) -2 3. A man buys spirit at Rs. 60 per letter‚ adds water to it and then sells it at Rs. 75 per litter. What is the ratio of spirit to water if his profit in the feal is 37.5%? (a) 9:1 (b) 10:1 (c) 11:1 (d) None of these. Ans (b) 10.1 4. A certain quantity of
Premium Christopher Nolan Multinational corporation Food
BENKELMAN BEAM METHOD A.C.Benkelman devised the simple deflection beam in 1953 for measurement of pavement surface deflection. It is widely used all over the world evaluation of the requirements of strengthening of flexible pavements. This method is done to lay down a uniform procedure for the design of flexible overlays or per I R C:81-1981 here a tentative guideline was published by the Indian road congress under the title “Tentative Guidelines for strengthening of flexible road pavements using
Premium Measurement
C A L I F O R N I A S TA N DA R D S T E S T Chemistry Released Test Questions Question Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Correct Answer A A C A B D A A A B A A C D A A C D B D D C A C A C D A D A C A B D A Standard CHIE1.A CHIE1.A CHIE1.C CHIE1.D CHIE1.E CHIE1.F CHIE1.F CHIE1.G CHIE1.K CH1.A CH1.A CH1.A CH1.B CH1.B CH1.C CH1.C CH1
Premium 1918 1921 1923
power over the other two (ex: President can veto legislation passed by Congress; Congress can impeach the President‚ etc.) Collective action problems: Collective action says that in order to achieve things‚ individuals must work together. You can do more together than you can do on your own. Situations in which the members of a group would benefit by working together to produce some outcome‚ but each individual is better off refusing to cooperate and reaping the benefits from those who do the work
Premium United States Constitution