Methods To determine the principals of osmoregulation‚ we sampled two lobsters from each tank and there were three different tanks which the water ranged in salinity. The experiment is to determine whether the six lobsters tested are osmoregulators or osmoconformers‚ this is done by obtaining a sample of hemolymph. The first step of the lab is to prepare the needle and syringe that will be taking the hemolymph. The syringe size was 1 ml‚ and the intention is to collect between 0.5 and 1.0 ml
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1. The use of microscale techniques does not change the hazardous nature of the reagents we use. Briefly describe the hazards associated with even small amounts of each of the following: a. concentrated hydrochloric acid‚ HCl HCL may be corrosive. It can cause burns to dosy tissue and can be deadly if inhaled or swallowed. b. sodium hydroxide‚ NaOH‚ solution NaOH is a very corrosive chemical and contact with it can cause burns to body tissue and
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Experiment #3 Mark A. Bruder 07. T.A. Michael Hall Alkanes: Chlorination Introduction: The purpose of this experiment is to determine the reactivity of hydrogen atoms on a carbon chain using free radical chlorination. In this experiment 1-chlorobutane will be chlorinated with the combination of sulfuryl chloride and ABCN as an initiator to produce the chlorine radicals. The combination of 1-chlorobutane and sulfur chloride will produce four dichlorobutane
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3-diol.The purple color of KmnO4 will change to brown CH3CH=CHCH2CH3 + KMnO4 (cold) ---> CH3CH2(OH)CH2(OH)CH2CH3 For the experiment between alkane and alkene that react with sulphuric acid‚alkene which is 2-pentene have react and change to ethyl hydrogen sulphate.The alkane‚heptanes doesn’t react as the as the sulphuric acid will act as electrophile. C5H10 + H2SO4 ==> C5H11.HSO4 For the aromatic hydrocarbon‚toluene doesn’t react with bromine water. This is because Br2 is electrophilic enough to
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moles of each element in 1.25 mol glucose (C6H12O6). c) How many molecules of oxygen atoms are present in 5.00 mol diphosphorus pentoxide? d) Calculate the number of moles of hydrogen atoms in 11.5 mol water. e) A sample of ethanol (C2H5OH) has a mass of 45.6 g.How many carbon atoms does the sample contain?How many hydrogen atoms are present?How many oxygen atoms are present? Percent Composition from Chemical a) What is the percent of C & H in C2H6 ? b) What is the percent of each element
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is dropped on all of the metals in period 4‚ then the elements with the largest atomic radii will react faster with Hydrochloric Acid because atoms with bigger atomic radii are more likely to give their electron(s) to the Hydrogen ion/atom‚ thus creating a full shell of Hydrogen and a full shell for the atom we are observing. Independent Variable: Period 4 atomic radii. Dependent Variable: Amount of time it takes for the reaction to be completed. Control Group: Concentration of HCl‚ volume
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ACKNOWLEDGEMENT I express my deep sense of gratitude and indebtness to Dr. Amarjeet Singh Walia‚ HOD of Chemical Engineering Department‚ Seth Jai Prakash Mukand Lal Institute Of Engineering & Technology‚ Radaur‚ Yamunanagar who had provided me a golden opportunity to get my practical training in National Fertilizers Limited‚ Panipat‚ Haryana. I also wish to acknowledge my deep obligation to and all officers of HR Department for the kind behavior‚ constant inspiration and valuable knowledge
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are two ordinary examples which require very little description. Just a little more involved are the displacement reactions‚ with which this exercise is mainly concerned. Your text book divides these processes into three categories: • • • hydrogen displacement metal displacement halogen displacement You may remember (?) how to tell if a chemical reaction is occurring by looking at the behavior of a combination of chemicals‚ but can you predict whether or not a reaction like those above
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chemical change. The second reaction occurred as a result of solid magnesium reacting with hydrochloric acid. The reaction produced heat and bubbles‚ both indications of a chemical change. A wood splint was used to determine that the gas produced was hydrogen gas‚ hence the other product is magnesium dichloride. In the third reaction‚ ammonium carbonate was heated to decompose into two gases‚ due to the absence of anything solid or liquid following the reaction. A wood splint was used to determine that
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When using it as a reducing agent‚ precautions must be taken. For one‚ LAH violently reacts with water and must be quenched by slowly adding drops of water instead of dissolving it in water. Secondly‚ due to LAHs production of hydrogen gas‚ reactions that use LAH must be performed in inert environments to provide an unreactive atmosphere. Additionally‚ lithium aluminum hydride‚ when added to organic solvents (such as DCM used in this lab)‚ produces a reaction that is extremely
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