this reaction at 25(C. A. 1020 kJ/mol B. -1.22 ( 103 kJ/mol C. 2.00 ( 103 kJ/mol D. -1.42 ( 103 kJ/mol E. -198 kJ/mol 2. For the reaction H2(g) + S(s) ( H2S(g)‚ (H( = -20.2 kJ/mol and (S( = +43.1 J/K·mol. Which of these statements is true? A. The reaction is only spontaneous at low temperatures. B. The reaction is spontaneous at all temperatures. C. (G( becomes less favorable as temperature increases. D. The reaction is spontaneous
Premium Oxygen Nitrogen Chemistry
From the results recorded it was identified that activity A and C had exothermic reactions‚ whilst activity B had an endothermic reaction. Each of the activities had initially begun with 23.4/8/9oC‚ however‚ within one minute of adding the 2nd reactants‚ the results began showing‚ as seen from the graph. Activity A and C had risen in temperature‚ with A gaining 4oC and in total of 2 minutes having the temperature of 27.9oC along with C increasing by 2.2oC and within 2 minutes of the experiment having
Premium Chemical reaction Chemistry Reaction rate
Concentration‚ Along with Varying Temperature and pH-Balanced Environments on the Enzyme-Catalyzed Reaction of pNPP Abstract: Introduction: Many of the chemical reactions‚ which take place in in living things are controlled by enzymes. In such cases‚ the enzyme is a protein in the cell which lowers the activation energy of a catalyzed reaction‚ which serves to increase the rate of the reaction. Alkaline phosphatase is made throughout the body. Its function is to remove phosphate groups
Premium Enzyme Catalysis Chemical reaction
science plays an extreme role. DNA is the abbreviation for Deoxyribonucleic acid. It is present in all organisms‚ whether it is a bacteria‚ bird or mammal. DNA is a long molecule that carries a particular genetic data; it is located in every cell in a human body except the red blood cells. DNA profiling is easy acquire and very accurate in identifying a person. There are many different ways a forensic expert or a police officer can get DNA samples. In criminal cases‚ DNA samples help solve many crimes
Premium DNA
Mitosis Hands-On Labs‚ Inc. Version 42-0091-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information
Premium Mitosis Cell cycle Chromosome
Biology Lab Report 2 Investigating the phenomenon of Osmosis in plant tissues: Potato in different concentrations of NaCl Tutor: Maria Tsaousidou By Marina Gkritzioudi Biology Lab Report 2 Investigating the phenomenon of Osmosis in plant tissues: Potato in different concentrations of NaCl Tutor: Maria Tsaousidou By Marina Gkritzioudi Investigating the phenomenon of Osmosis in plant tissues: Potato in different concentrations of NaCl Introduction: Osmosis is the movement of
Premium Concentration Chemistry Solution
Last Monday‚ (August 15‚ 2011) we had our Environmental Biology Field trip at three different places all around Manila‚ We visited The Avilon Zoo‚ The La Mesa Eco Park and The Myth of the Human body. We are scheduled to depart at around 6:00 in the morning because that is what’s written in our itinerary‚ but just like what we all expected‚ the bus started the engine at around 7:30 in the morning already‚ we were kind of left behind with our scheduled trip and we’re a little bit upset about it because
Premium Human body Thought
Title: Surface Area vs. Rate of Reaction Research question: How can different temperatures affect the rate of reaction‚ when the reactant is in powder form? Hypothesis: If the temperature of the water is increased‚ the rate of reaction will also increase as the heat given off to the particles will increase leading to more movement and frequent collisions. Background information: Chemical reactions occur when two or more molecules interact with each other‚ but that can only occur when they
Premium Chemical reaction Chemistry Reaction rate
PTC Testing Lab 11/12/13 Abstract: The main purpose of this lab is to determine that you have the dominant PTC gene or recessive PTC gene. PTC testing is a method used to test for a genetic trait. People who have dominant gene taste PTC (phenylthiocarbamide)‚ and people who have recessive do not taste PTC. This trait is passed genetically from parents to their children‚ so that if a person has the trait‚ then at least one of their parents had the trait as well (New York
Premium Chemistry Experiment Science
cheese. Lactic acid bacteria(LAB)‚ a bacteria that can be found in the production of cheese‚ its stress gene was investigated in the experiment by using various biochemical and genetic techniques to identify and extract. The characterisation of the strain illustrates how identification of strains differ using different methods‚ such as gram stain and 16s rRNA screening. After the characterisation‚ the stress gene isolation assist the further understanding of the gene on LAB be giving different stress
Premium Bacteria