Trial | 1 | 2 | 3 | Final Reading HCl (ml) | 35 | 35 | 35 | Initial Reading HCl (ml) | 0 | 0 | 0 | Volume HCl used (ml) | 35 | 35 | 35 | | | | | Final Reading NaOH (ml) | 30.6 | 30.2 | 30.0 | Initial Reading NaOH (ml) | 0 | 0 | 0 | Volume NaOH used (ml) | 30.6 | 30.2 | 30.0 | | | | | Acid to Base Ratio | 0.87 | 0.86 | 0.86 | Average acid/base ratio | 0.86 | | | | | Base to Acid Ratio | 1.14 | 1.16 | 1.17 | Average base/acid Ratio | 1.16 | Name: Jared Philip
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E XPE RIME NT 4 . 5 Reactions of acids Aim To investigate and compare some reactions of a strong acid‚ hydrochloric acid‚ and a weak acid‚ ethanoic acid (common name‚ acetic acid) Equipment Dropper bottles containing: • 0.1 M hydrochloric acid‚ HCl • 0.1 M ethanoic acid (acetic acid)‚ CH3COOH • 0.1 M sodium hydroxide‚ NaOH • 1 M hydrochloric acid‚ HCl • 1 M ethanoic acid (acetic acid)‚ CH3COOH • universal indicator solution • limewater (calcium hydroxide‚ Ca(OH)2) Marble chips (calcium carbonate
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Chapter 10 Statistical Inference About Means and Proportions with Two Populations Learning Objectives 1. Be able to develop interval estimates and conduct hypothesis tests about the difference between two population means whenandare known. 2. Know the properties of the sampling distribution of . 3. Be able to use the t distribution to conduct statistical inferences about the difference between two population means whenandare unknown. 4. Learn how to analyze the difference between two population
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Standardization of NaOH and Determination of Unknown Acid KEYWORDS: quantitative analysis‚ titration‚ buret‚ endpoint‚ standardization‚ half-equivalence point‚ calorimetric titration‚ potentiometric titration ABSTRACT: The concentration of sodium hydroxide was determined by colorimetric titration‚ and the identity of an unknown acid was determined by potentiometric titration. In the first titration‚ a strong acid standard‚ potassium hydrogen phthalate (KHP)‚ was used‚ to determine the concentration
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com/chemistry/campbell Chapter Nine Nucleic Acids: How Structure Conveys Information Paul D. Adams • University of Arkansas Nucleic Acids • Nucleic acid: a biopolymer containing three types of monomer units • a base derived from purine or pyrimidine (nucleobases) • a monosaccharide‚ either D-ribose or 2-deoxy-D-ribose • phosphoric acid • RNA (Ribonucleic Acid) • DNA (Deoxyribonucleic Acid) Nucleic Acids • Levels of structure • 1°structure: the order of bases on the polynucleotide
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objective of the experiment was to prepare Benzilic acid by multistep synthesis starting with benzaldehyde. In this setup however‚ product of the first step‚ Benzoin‚ is provided thereby omitting the first step involving the conversion of benzaldehyde. For this experiment‚ the microscale techniques of reflux‚ crystallization‚ and melting-point determination were used. Utilizing these techniques a product yield of 93% for benzil and 57% for Benzilic acid was obtained‚ as well as a melting point range of
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The music of the early fifties was influence by the post-war; its sounds were slow and mostly ballads. This sound came to be known as bubblegum music. It was only until mid-fifties when rock broke out and gave birth to rock and roll‚ which exploded and created a new outrageous generation. The music of the fifties greatly impacted the generation of the fifties to what would become of them all the way to today. The beats made them want to dance‚ the words made them want to love and sexuality became
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Flowers and Acid Call them freaks‚ the underground‚ the counterculture‚ flower children‚ or just simply hippies‚ they are all loose labels for the youth culture of the 60’s that transformed life in the West as we knew it‚ introducing the spirit of freedom‚ of hope‚ of happiness‚ of change‚ and of revolution (Miles 9). The years that made up the 1960’s were some of the most exciting and turbulent years in American history. The post World War II baby boomers grew up. A president and
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Amelia Lynn AP Lang Alexie: The Joy of Reading 1. Superman is breaking the door down and saving lives. Alexie is trying to save our lives and not fall into peer pressure. He says this many times near the end of the essay. He wants better for the Indians on the reservation. Alexie relates to Superman because Superman is a hero who saves life and Alexie is a hero to the students and his saving their lives. 2. Alexie repeats the verb “read”. You could tell by the amount of times he mentions reading
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to 6 hours MODULE 2 ACIDS AND BASES In Module 1‚ you identified common properties of solutions using different methods. You learned how to report the amount of the components in a given volume of solution. You also found out that not all solutions are liquid. Some of them are solids and others are gases. Towards the end of the module‚ you investigated the factors that affect how fast a solid dissolves in water. Most of the solutions you studied in Module 1 form two classes or groups of
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