Using Freezing-Point Depression to Find Molecular Weight Abstract: In this lab‚ the purpose was to use the freezing point depression method to determine the molecular weight of aspirin. This was done by determining the freezing of t-butanol and that of a t-butanol and aspirin solution; then finding the molality of the solution‚ and moles of aspirin. In the results of the experiment‚ the molar mass was found to be 192.2 g/mol‚ which differed from the established value of 180.2 g/mol by 6.7% error
Premium Freezing-point depression
be affordable‚ an addition to my Fish tank‚ and Get along with all six Angelfish. Live in water temperatures of 78-82 degrees Fahrenheit‚ and not make a mess in the tank or destroy the vegetation already living in the aquarium. I have set up a point by point arrangement to help me select the best algae eater for my tank. The Chinese algae eater Price Size Life Span Characteristic Tank Mates Temp. Range Waste $2 - $8 11in. - 1ft 3– 5years Docile as a juvenile /territorial as it mature
Premium Temperature Fishkeeping Aquarium
ABSTRACT Determining the melting point of a solid organic compound is the easiest way to identify the compound and determine its purity at the same time. For actual samples of compounds‚ the melting will occur over a range of temperatures making the melting points into a melting “range”. The difference between the temperature at which the sample begins to melt and the temperature at which it finishes melting‚ or the magnitude of the melting range‚ is a very important criteria of determining the
Premium Freezing-point depression Melting point Temperature
7 Pavement Joints Types of Joints D-1 Contraction Joints Longitudinal Joints Transverse Construction Joints Terminal Joints Expansion Joints Retro-fitted Tie Bars Sealing Joints CHAPTER SEVEN: PAVEMENT JOINTS __________________________________________ Pavement joints are vital to control pavement cracking and pavement movement. Without joints‚ most concrete pavements would be riddled with cracks within one or two years after placement. Water‚ ice‚ salt and loads would eventually cause differential
Premium Structural engineering
HOW TO FIND OUT POINT GROUP Dr. Cyriac Mathew Symmetry elements can combine in a definite number of ways. For example consider BF3 molecule. It has the C3 axis as the principal axis. Also‚ there are 3 C2 axes perpendicular to the C3 axis‚ 3 σv planes‚ and one σh plane. All these symmetry elements can combine. Take NH3. It also has C3 axis as principal axis. There are 3 σv planes‚ but no C2 perpendicular to C3 or a σh plane. For the N2F2 molecule there exist one C2 axis and a σh plane but
Premium
Melting Point Determination and Thermometer Calibration Lab Background: The melting point of a substance‚ a solid in this case‚ signifies the temperature at which the first crystal starts to melt until the temperature at which the last crystal disappears is reached. That being said‚ melting points are expressed in ranges‚ am organic compound will have a sharp range depending on the purity of the compound. Impurity of an organic substance will register an abnormal melting point based on its
Premium Salicylic acid Temperature Chemical compound
ON THE CONVERGENCE OF A CLASS OF INFEASIBLE INTERIOR-POINT METHODS FOR THE HORIZONTAL LINEAR COMPLEMENTARITY PROBLEM* YIN ZHANGt Abstract. Interior-point methods require strictly feasible points as starting points. In theory‚ this requirement does not seem to be particularly restrictive‚ but it can be costly in computation. To overcome this deficiency‚ most existing practical algorithms allow positive but infeasible starting points and seek feasibility and optimality simultaneously. Algorithms
Premium Linear programming Optimization
Body: Each of your supporting points in your defense will need a paragraph. State your point as a way of creating a topic sentence for an evidence paragraph. You’ll need at least three and probably no more than five. Each evidence paragraph should have specific support by way of facts‚ statistics‚ examples‚ or other details. You may use personal example as some of your supporting detail‚ but try to use more objective support as well. Body: Each of your supporting points in your defense will need a
Premium Point Support Technical support
Essay on The Dramatic Point of View of "Hills Like White Elephants" This story‚ Hills Like White Elephants‚ is taken form the Objective (dramatic) point of view where the author is the narrator. The author doesn’t enter the mind of the characters at any time. He allows us only to see the characters as we would in real life. This is sometimes called the dramatic point of view. The only way we‚ the reader‚ learn anything about them is through what they say about themselves. If the story were
Premium Narrative Cognition Psychology
JINNAH 14 POINTS INTRODUCTION In 1928‚an All Parties Conference was convened to solve the constitutional problems of India.A committee was set up under Pandit Lal Nehru.That committee prepared a report which is known as "Nehru Report".This report demanded "Dominion Status" for India.Separate electorates were refused and the reservation of seats for the Muslims of Bengal and Punjab was rejected.In this report‚not a single demand of the Muslims was upheld. Since Nehru Report was the last word
Free Pakistan Muhammad Ali Jinnah