Nobody downloaded yet

Chemistry - Assignment Example

Comments (0) Cite this document
Summary
Elements with atomic numbers of 110 and beyond have not yet been discovered. Which of the elements with atomic numbers in the range of 110 - 118 would have chemical properties most like those of thallium (Tl)? Explain why it is possible to make this kind of prediction.
On…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER93.6% of users find it useful
Chemistry assignment
Read TextPreview

Extract of sample "Chemistry"

Download file to see previous pages Periodicity can be found in ionization energies and electronic affinities along the groups in the periodic table (Atkins). This prediction can be made because of arrangement of atoms on the basis of valence shell electrons in the periodic table.
In heteronuclear molecules, some atoms are more electronegative than others. The electron pair in a bond in such a molecule is shared unequally. The more electronegative atom attracts the shared electron pair, causing a polarity in the bond. The more electronegative atom has a partial negative charge, while the other atom has a partial positive charge. Molecules where the difference in electronegativities is low (0) are nonpolar, while those with greater differences are polar (see Figure 1). In molecules with very high electronegativity differences, the bonds are ionic as the electrons are with the electronegative atom (Atkins; ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Chemistry assignment Example | Topics and Well Written Essays - 750 words”, n.d.)
Chemistry assignment Example | Topics and Well Written Essays - 750 words. Retrieved from https://studentshare.org/miscellaneous/1556373-chemistry-assignment
(Chemistry Assignment Example | Topics and Well Written Essays - 750 Words)
Chemistry Assignment Example | Topics and Well Written Essays - 750 Words. https://studentshare.org/miscellaneous/1556373-chemistry-assignment.
“Chemistry Assignment Example | Topics and Well Written Essays - 750 Words”, n.d. https://studentshare.org/miscellaneous/1556373-chemistry-assignment.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Chemistry assignment

Clinical Chemistry Assignment: Case study and data interpretation

...?Case Study and Data Interpretation Question Plasma Osmolality is the amount of electrolyte water balance in the body. Sodium salts, glucose, and urea are the major causes of osmolality (Moritz ML, 2010). Most of the people confuse plasma osmolarity with plasma osmolality. The difference is the amount of measure used to quantify the amount of solutes in plasma. One litre of plasma osmolality is equivalent to 1 kilogram of plasma osmolarity. Osmolality in blood tend to increase with the body loss of water. For a normal person the antidiuretic hormone will be under stimulation if there is increased rate of osmolality. The presence of antidiuretic hormone leads to reabsorption of water. The urine excreted also becomes more... Study and Data...
3 Pages(750 words)Assignment

Chemistry Assignment - Heat, Fire, Bohl model, Hydrogen

...Week1 DQ A fire is started in a fireplace by striking a match and lighting crumpled paper under some logs. Describe all the energy transfers in the scenario. Answer: Match stick is made up of (wood+sulphur) that contain chemical energy Striking the match involves scratching the sulphur end on the rough surface thus producing friction hence kinetic, sound and heat energy are produced at this instance. The match stick lights hence produces light and heat energy that burns the crumpled papers and logs consecutively. Crumpled papers and logs contain chemical energy and while burning produces light and heat energy. Thus: Chemical energy kinetic energy heat energy sound energy light energy heat energy chemical energy... DQ A fire...
2 Pages(500 words)Essay

Chemistry Assignment

...Question a) has 4 protons and 11-4=7 neutrons, because it's neutral it has 4 electrons b) "hydrogen like beryllium ion has electron. Symbol for such ion is: c) i)En=-(13.6eV*z)/n, because z=4 it can be written as En=-16*13.6eV / n ii) the dependence of quatum numbers n upon l is given by the following formula l=n-1 2(2*l+1)=2* n iii) n=2 for beryllium, so l=1 and can not be 3 d) i) E1=-16*13.6eV / 1=-217.6eV E2=-16*13.6eV / 4= -54.4eV E3=-16*13.6eV / 9 = -3.067eV Eoo=-16*13.6eV/inf = 0 ii) iii) energy emitted by photon: |Einf- E2|= 0+54.4eV=54.4 eV= 54.4*1.6*10^-19 [J]=8,7*10^-18 [J] 8,7*10^-18 [J] now we should express photon's frequency from it' energy: E=h*f => f=E/h f= 8,7*10^-18 [J]/6.63... a) has 4...
1 Pages(250 words)Assignment

Chemistry Practical Assignment - Copper carbonate

...Chemistry Practical Assignment Introduction: Copper carbonate if heated will produce gas and by measuring the volume of gas, we can experimentally establish the correctness of both the equations provided to us. The important thing for finding the correct equation is that the volume of one mole of gas at NTP is 22.4 liter and using this equation we can back calculate the mole or mass of carbon dioxide formed from the copper carbonate used for the experiment (Determining the Correct Equation for the Decomposition of Copper Carbonate, 2003) and hence find out the correctness of the eauation provided. Equipment and Apparatus required for conducting the experiment: The following apparatuses are required to conduct the experiment... to get...
4 Pages(1000 words)Lab Report

ASSIGNMENT IN CHEMISTRY

...ASSIGNMENT IN CHEMISTRY The following is a reversible reaction. CaCO3(s) CaO(s) +CO2(g) a. Write the reaction equation of the forward reaction: CaCO3 (s) CaO(s) + CO2(g) b. Write the reaction equation of the backward reaction: CaO(s) + CO2(g) CaCO3 (s) c. When is equilibrium reached in the above reaction Equilibrium is reached in the above reaction when the rate of the forward reaction is equal to the rate of the backward reaction. At equilibrium, [CaO(s)] [CO2(g)] / [CaCO3] = k' / k" = K. d. Draw and label the curves of the two reaction rates reaching equilibrium for the above reaction. The equilibrium system is balanced in terms of the forward and reverse reaction...
4 Pages(1000 words)Essay

Chemistry assignment

... containing unreacted NaOH was made up to 250 cm3 in a volumetric flask. 25 cm3 samples of this solution were titrated against 0.1 mol dm-3 hydrochloric acid using bromothymol blue as an indicator. HCl + NaOH  NaCl + H2O The mean titre was 20.0 cm3. Calculate the percentage of ammonium sulphate by mass in the lawn sand. From HCl + NaOH  NaCl + H2O, From (NH4) 2SO4 (s) + 2NaOH (aq)  2NH3 (g) + Na2SO4(aq) + 2H2O (1), Source: Brown, T., Bursten, B., Lemay, E. (2002). Chemistry: The central science. New York: Prentice Hall... FORMULAE & EQUATIONS Write formulae for the following compounds: a) magnesium chloride - d) sodium hydrogen carbonate -b) calcium carbonate - e) ammonium sulphate - c) potassium phosphate - f) barium ni...
7 Pages(1750 words)Essay

Org chemistry drawing assignment

... Your Module Organic Chemistry Drawing Assignment Draw a chair cyclohexane ring and label of the substituents as axial or equatorial. Figure 1: Axial (a) and equatorial (e) positions in cyclohexane 2) Draw trans-1,2-dimethylcyclohexane and cis-1,2-dimethylcyclohexane as their most stable chair conformations. Label all non-favorable interactions, describe why they are unfavorable, and to what value (energy). Which is more stable, the trans or cis structure? Figure 2: cis and trans 1,2-dimethylcyclohexane. All non-favorable 1,3-diaxial interactions are presented in the figure above. Such interactions are unfavorable because both methyl groups and hydrogens try to occupy the same space, which leads to destabilization of the molecule... ...
4 Pages(1000 words)Coursework

Assignment (Chemistry subject)

...Assignment Chapter Molecular Reasons 14- What is the difference between a homogeneous and a mixture and a heterogeneous mixture? Give one example of each Answer: Mixture: This is a mixture of two or more pure substance combined to form a mixture. It can consist of Matter having variable composition with definite or varying properties and can be separated into component elements or compounds. Example include carbonated soda, coarse mixture of sea water or even mixture of air that contain nitrogen, oxygen, carbon dioxide and many others. Homogeneous Mixture: They possess uniform composition and look. They include salt and water, soda, metallic alloys. Heterogeneous Mixture: They do not have uniform composition such as...
2 Pages(500 words)Assignment

Chemistry assignment

... Advanced biochemistry ll Response to question The anaerobiosis needs the NAD+ regeneration from NADH so as to allow the continuation of glycolysis. Part a Figure 1 shows the fate of the glucose carbon atoms. C-1 (or C-6) becomes C-3 of a glyceraldeldehyde 3-phosphate and pyruvate subsequently. If the decarboxylation of the pyruvate occurs and ethanol is reduced, C-3 would be the C-2 of ethanol given by CH3-CH2-OH. Figure 1. O14 CO + Part b For all the conversion of all the labeled atoms of carbon to 14CO2 from glucose during the fermentation of ethanol, the original label has to be placed on C-3 or C-4 of the glucose as these are changed to the pyruvate carboxyl group. Response to question 2. The fermentation of ethanol in yeast...
2 Pages(500 words)Assignment

Analytical chemistry assignment 12 questions

...ANALYTICAL CHEMISTRY ASSIGNMENT due Explain the problems encounter when making chemical measurements, define the terms analyte, matrix and interferent (5 Marks). Some of the problems encountered when making chemical measurements include the complexity of the measuring equipment and the expertise of the personnel. Some procedures may not produce reliable results without complicated measuring equipment while others may require highly trained staff to perform the procedures. An analyte can be defined as the substance or component that is of interest in a chemical analysis procedure. It is the chemical constituent that is being measured. A matrix, on the other hand, can be defined as the chemical components...
5 Pages(1250 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Assignment on topic Chemistry assignment for FREE!

Contact Us